258650028 has 108 divisors (see below), whose sum is σ = 819131040. Its totient is φ = 68209344.

The previous prime is 258650011. The next prime is 258650047. The reversal of 258650028 is 820056852.

258650028 is a `hidden beast` number, since 2 + 586 + 50 + 0 + 28 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 258649974 and 258650001.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17293 + ... + 28571.

Almost surely, 2^258650028 is an apocalyptic number.

258650028 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 258650028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409565520).

258650028 is an abundant number, since it is smaller than the sum of its proper divisors (560481012).

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

258650028 is a wasteful number, since it uses less digits than its factorization.

258650028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11316 (or 11304 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 258650028 is about 16082.6001629090. The cubic root of 258650028 is about 637.1438712185.

The spelling of 258650028 in words is "two hundred fifty-eight million, six hundred fifty thousand, twenty-eight".