401605004 has 24 divisors (see below), whose sum is σ = 723776256. Its totient is φ = 194864000.

The previous prime is 401604971. The next prime is 401605013. The reversal of 401605004 is 400506104.

It is a happy number.

It is a super-2 number, since 2×401605004² = 322573158475680032, which contains 22 as substring.

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, 24914 + ... + 37734.

It is an arithmetic number, because the mean of its divisors is an integer number (30157344).

Almost surely, 2^401605004 is an apocalyptic number.

It is an amenable number.

401605004 is a deficient number, since it is larger than the sum of its proper divisors (322171252).

401605004 is a wasteful number, since it uses less digits than its factorization.

401605004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13057 (or 13055 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401605004 is about 20040.0849299598. The cubic root of 401605004 is about 737.7904654564.

The spelling of 401605004 in words is "four hundred one million, six hundred five thousand, four".