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258093972 = 223331127607
BaseRepresentation
bin11110110001000…
…11001110010100
3122222122112101000
433120203032110
51012033001342
641335503300
76252522363
oct1730431624
9588575330
10258093972
11122761904
1272527b30
1341617836
14263c57da
15179d244c
hexf623394

258093972 has 96 divisors (see below), whose sum is σ = 697303040. Its totient is φ = 82464480.

The previous prime is 258093961. The next prime is 258093977. The reversal of 258093972 is 279390852.

258093972 is a `hidden beast` number, since 258 + 0 + 9 + 397 + 2 = 666.

258093972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2580939722 = 133224996765473568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258093977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424893 + ... + 425499.

Almost surely, 2258093972 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 258093972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348651520).

258093972 is an abundant number, since it is smaller than the sum of its proper divisors (439209068).

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

258093972 is a wasteful number, since it uses less digits than its factorization.

258093972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 258093972 is about 16065.3033584803. The cubic root of 258093972 is about 636.6869579832.

The spelling of 258093972 in words is "two hundred fifty-eight million, ninety-three thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 9 12 18 27 31 36 54 62 93 108 124 127 186 254 279 372 381 508 558 607 762 837 1116 1143 1214 1524 1674 1821 2286 2428 3348 3429 3642 3937 4572 5463 6858 7284 7874 10926 11811 13716 15748 16389 18817 21852 23622 32778 35433 37634 47244 56451 65556 70866 75268 77089 106299 112902 141732 154178 169353 212598 225804 231267 308356 338706 425196 462534 508059 677412 693801 925068 1016118 1387602 2032236 2081403 2389759 2775204 4162806 4779518 7169277 8325612 9559036 14338554 21507831 28677108 43015662 64523493 86031324 129046986 258093972