258128880 has 40 divisors (see below), whose sum is σ = 800200272. Its totient is φ = 68834304.

The previous prime is 258128869. The next prime is 258128891. The reversal of 258128880 is 88821852.

It is an interprime number because it is at equal distance from previous prime (258128869) and next prime (258128891).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537529 + ... + 538008.

Almost surely, 2^258128880 is an apocalyptic number.

258128880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258128880 is an abundant number, since it is smaller than the sum of its proper divisors (542071392).

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

258128880 is a wasteful number, since it uses less digits than its factorization.

258128880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075553 (or 1075547 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 258128880 is about 16066.3897624824. The cubic root of 258128880 is about 636.7156613094.

The spelling of 258128880 in words is "two hundred fifty-eight million, one hundred twenty-eight thousand, eight hundred eighty".