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258025260 = 223510394139
BaseRepresentation
bin11110110000100…
…10011100101100
3122222112001010010
433120102130230
51012023302020
641334213220
76252115143
oct1730223454
9588461103
10258025260
11122715219
12724b4210
13415c248c
14263a875a
15179bbde0
hexf61272c

258025260 has 48 divisors (see below), whose sum is σ = 723340800. Its totient is φ = 68723904.

The previous prime is 258025219. The next prime is 258025279. The reversal of 258025260 is 62520852.

258025260 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60271 + ... + 64409.

It is an arithmetic number, because the mean of its divisors is an integer number (15069600).

Almost surely, 2258025260 is an apocalyptic number.

258025260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258025260 is an abundant number, since it is smaller than the sum of its proper divisors (465315540).

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

258025260 is a wasteful number, since it uses less digits than its factorization.

258025260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190 (or 5188 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 258025260 is about 16063.1646944181. The cubic root of 258025260 is about 636.6304515399.

The spelling of 258025260 in words is "two hundred fifty-eight million, twenty-five thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1039 2078 3117 4139 4156 5195 6234 8278 10390 12417 12468 15585 16556 20695 20780 24834 31170 41390 49668 62085 62340 82780 124170 248340 4300421 8600842 12901263 17201684 21502105 25802526 43004210 51605052 64506315 86008420 129012630 258025260