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258093252 = 2232175373109
BaseRepresentation
bin11110110001000…
…11000011000100
3122222122111101100
433120203003010
51012032441002
641335500100
76252520314
oct1730430304
9588574340
10258093252
1112276130a
1272527630
1341617401
14263c5444
15179d211c
hexf6230c4

258093252 has 144 divisors (see below), whose sum is σ = 719999280. Its totient is φ = 77635584.

The previous prime is 258093233. The next prime is 258093271. The reversal of 258093252 is 252390852.

It is an interprime number because it is at equal distance from previous prime (258093233) and next prime (258093271).

It can be written as a sum of positive squares in 8 ways, for example, as 38638656 + 219454596 = 6216^2 + 14814^2 .

It is a super-2 number, since 2×2580932522 = 133224253455871008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2367774 + ... + 2367882.

It is an arithmetic number, because the mean of its divisors is an integer number (4999995).

Almost surely, 2258093252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258093252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359999640).

258093252 is an abundant number, since it is smaller than the sum of its proper divisors (461906028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258093252 is a wasteful number, since it uses less digits than its factorization.

258093252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 258093252 is about 16065.2809499243. The cubic root of 258093252 is about 636.6863659314.

The spelling of 258093252 in words is "two hundred fifty-eight million, ninety-three thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 17 18 34 36 51 53 68 73 102 106 109 146 153 159 204 212 218 219 292 306 318 327 436 438 477 612 636 654 657 876 901 954 981 1241 1308 1314 1802 1853 1908 1962 2482 2628 2703 3604 3706 3723 3869 3924 4964 5406 5559 5777 7412 7446 7738 7957 8109 10812 11118 11169 11554 11607 14892 15476 15914 16218 16677 17331 22236 22338 23108 23214 23871 31828 32436 33354 34662 34821 44676 46428 47742 51993 65773 66708 69324 69642 71613 95484 98209 103986 131546 135269 139284 143226 196418 197319 207972 263092 270538 286452 294627 392836 394638 405807 421721 541076 589254 591957 789276 811614 843442 883881 1178508 1183914 1217421 1265163 1623228 1686884 1767762 2367828 2434842 2530326 3535524 3795489 4869684 5060652 7169257 7590978 14338514 15181956 21507771 28677028 43015542 64523313 86031084 129046626 258093252