258402660 has 48 divisors (see below), whose sum is σ = 761611200. Its totient is φ = 65280384.

The previous prime is 258402629. The next prime is 258402667. The reversal of 258402660 is 66204852.

It is not an unprimeable number, because it can be changed into a prime (258402667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112195 + ... + 114474.

It is an arithmetic number, because the mean of its divisors is an integer number (15866900).

Almost surely, 2^258402660 is an apocalyptic number.

258402660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258402660 is an abundant number, since it is smaller than the sum of its proper divisors (503208540).

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

258402660 is a wasteful number, since it uses less digits than its factorization.

258402660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226700 (or 226698 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 258402660 is about 16074.9077757852. The cubic root of 258402660 is about 636.9406889780.

The spelling of 258402660 in words is "two hundred fifty-eight million, four hundred two thousand, six hundred sixty".