258278404 has 24 divisors (see below), whose sum is σ = 463917888. Its totient is φ = 125774880.

The previous prime is 258278387. The next prime is 258278407. The reversal of 258278404 is 404872852.

It is not an unprimeable number, because it can be changed into a prime (258278407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18094 + ... + 29050.

It is an arithmetic number, because the mean of its divisors is an integer number (19329912).

Almost surely, 2^258278404 is an apocalyptic number.

It is an amenable number.

258278404 is a deficient number, since it is larger than the sum of its proper divisors (205639484).

258278404 is a wasteful number, since it uses less digits than its factorization.

258278404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11115 (or 11113 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 258278404 is about 16071.0424055193. The cubic root of 258278404 is about 636.8385791011.

The spelling of 258278404 in words is "two hundred fifty-eight million, two hundred seventy-eight thousand, four hundred four".