401025878 has 16 divisors (see below), whose sum is σ = 668607696. Its totient is φ = 178844640.

The previous prime is 401025857. The next prime is 401025881. The reversal of 401025878 is 878520104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170801 + ... + 173132.

It is an arithmetic number, because the mean of its divisors is an integer number (41787981).

Almost surely, 2^401025878 is an apocalyptic number.

401025878 is a deficient number, since it is larger than the sum of its proper divisors (267581818).

401025878 is a wasteful number, since it uses less digits than its factorization.

401025878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343999.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 401025878 is about 20025.6305269023. The cubic root of 401025878 is about 737.4356564759.

The spelling of 401025878 in words is "four hundred one million, twenty-five thousand, eight hundred seventy-eight".