258290028 has 36 divisors (see below), whose sum is σ = 687264760. Its totient is φ = 81565056.

The previous prime is 258290017. The next prime is 258290029. The reversal of 258290028 is 820092852.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 258289974 and 258290001.

It is not an unprimeable number, because it can be changed into a prime (258290029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188125 + ... + 189492.

Almost surely, 2^258290028 is an apocalyptic number.

It is an amenable number.

258290028 is an abundant number, since it is smaller than the sum of its proper divisors (428974732).

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

258290028 is a wasteful number, since it uses less digits than its factorization.

258290028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377646 (or 377641 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 258290028 is about 16071.4040456956. The cubic root of 258290028 is about 636.8481327462.

The spelling of 258290028 in words is "two hundred fifty-eight million, two hundred ninety thousand, twenty-eight".