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258630724 = 22112172432
BaseRepresentation
bin11110110101001…
…10010001000100
3200000122210122201
433122212101010
51012202140344
641355204244
76260216302
oct1732462104
9600583581
10258630724
11122a99100
1272746684
1341774c41
14264c5272
1517a8b4d4
hexf6a6444

258630724 has 81 divisors (see below), whose sum is σ = 541051581. Its totient is φ = 108071040.

The previous prime is 258630661. The next prime is 258630727. The reversal of 258630724 is 427036852.

The square root of 258630724 is 16082.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 201356100 + 57274624 = 14190^2 + 7568^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258630727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6014647 + ... + 6014689.

Almost surely, 2258630724 is an apocalyptic number.

258630724 is the 16082-nd square number.

It is an amenable number.

258630724 is an abundant number, since it is smaller than the sum of its proper divisors (282420857).

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

258630724 is a wasteful number, since it uses less digits than its factorization.

258630724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The cubic root of 258630724 is about 637.1280200297.

The spelling of 258630724 in words is "two hundred fifty-eight million, six hundred thirty thousand, seven hundred twenty-four".

Divisors: 1 2 4 11 17 22 34 43 44 68 86 121 172 187 242 289 374 473 484 578 731 748 946 1156 1462 1849 1892 2057 2924 3179 3698 4114 5203 6358 7396 8041 8228 10406 12427 12716 16082 20339 20812 24854 31433 32164 34969 40678 49708 62866 69938 81356 88451 125732 136697 139876 176902 223729 273394 345763 353804 447458 534361 546788 691526 894916 1068722 1383052 1503667 2137444 3007334 3803393 5877971 6014668 7606786 11755942 15213572 23511884 64657681 129315362 258630724