401003688 has 16 divisors (see below), whose sum is σ = 1002509280. Its totient is φ = 133667888.

The previous prime is 401003663. The next prime is 401003717. The reversal of 401003688 is 886300104.

It is a happy number.

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, 8354220 + ... + 8354267.

It is an arithmetic number, because the mean of its divisors is an integer number (62656830).

Almost surely, 2^401003688 is an apocalyptic number.

It is an amenable number.

401003688 is an abundant number, since it is smaller than the sum of its proper divisors (601505592).

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

401003688 is a wasteful number, since it uses less digits than its factorization.

401003688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16708496 (or 16708492 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 401003688 is about 20025.0764792547. The cubic root of 401003688 is about 737.4220546945.

The spelling of 401003688 in words is "four hundred one million, three thousand, six hundred eighty-eight".