258508420 has 12 divisors (see below), whose sum is σ = 542867724. Its totient is φ = 103403360.

The previous prime is 258508391. The next prime is 258508463. The reversal of 258508420 is 24805852.

It can be written as a sum of positive squares in 2 ways, for example, as 129095044 + 129413376 = 11362^2 + 11376^2 .

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, 6462691 + ... + 6462730.

It is an arithmetic number, because the mean of its divisors is an integer number (45238977).

Almost surely, 2^258508420 is an apocalyptic number.

258508420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258508420 is an abundant number, since it is smaller than the sum of its proper divisors (284359304).

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

258508420 is a wasteful number, since it uses less digits than its factorization.

258508420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12925430 (or 12925428 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 258508420 is about 16078.1970382254. The cubic root of 258508420 is about 637.0275736088.

The spelling of 258508420 in words is "two hundred fifty-eight million, five hundred eight thousand, four hundred twenty".