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258030528 = 26371131699
BaseRepresentation
bin11110110000100…
…11101111000000
3122222112022100020
433120103233000
51012023434103
641334253440
76252136410
oct1730235700
9588468306
10258030528
11122719178
12724b7280
13415c49b2
14263aa640
15179bd753
hexf613bc0

258030528 has 112 divisors (see below), whose sum is σ = 787603200. Its totient is φ = 73027584.

The previous prime is 258030527. The next prime is 258030551. The reversal of 258030528 is 825030852.

258030528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258030527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151023 + ... + 152721.

Almost surely, 2258030528 is an apocalyptic number.

258030528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258030528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393801600).

258030528 is an abundant number, since it is smaller than the sum of its proper divisors (529572672).

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

258030528 is a wasteful number, since it uses less digits than its factorization.

258030528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 258030528 is about 16063.3286712313. The cubic root of 258030528 is about 636.6347841214.

The spelling of 258030528 in words is "two hundred fifty-eight million, thirty thousand, five hundred twenty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 113 168 192 224 226 336 339 448 452 672 678 791 904 1344 1356 1582 1699 1808 2373 2712 3164 3398 3616 4746 5097 5424 6328 6796 7232 9492 10194 10848 11893 12656 13592 18984 20388 21696 23786 25312 27184 35679 37968 40776 47572 50624 54368 71358 75936 81552 95144 108736 142716 151872 163104 190288 191987 285432 326208 380576 383974 570864 575961 761152 767948 1141728 1151922 1343909 1535896 2283456 2303844 2687818 3071792 4031727 4607688 5375636 6143584 8063454 9215376 10751272 12287168 16126908 18430752 21502544 32253816 36861504 43005088 64507632 86010176 129015264 258030528