258129892 has 12 divisors (see below), whose sum is σ = 454224316. Its totient is φ = 128351520.

The previous prime is 258129869. The next prime is 258129923. The reversal of 258129892 is 298921852.

It can be written as a sum of positive squares in 2 ways, for example, as 25140196 + 232989696 = 5014^2 + 15264^2 .

It is a super-2 number, since 2×258129892² = 133262082287863328, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177543 + ... + 178990.

Almost surely, 2^258129892 is an apocalyptic number.

It is an amenable number.

258129892 is a deficient number, since it is larger than the sum of its proper divisors (196094424).

258129892 is a wasteful number, since it uses less digits than its factorization.

258129892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356718 (or 356716 counting only the distinct ones).

The product of its digits is 207360, while the sum is 46.

The square root of 258129892 is about 16066.4212567703. The cubic root of 258129892 is about 636.7164933942.

The spelling of 258129892 in words is "two hundred fifty-eight million, one hundred twenty-nine thousand, eight hundred ninety-two".