401015636 has 48 divisors (see below), whose sum is σ = 819192192. Its totient is φ = 168220800.

The previous prime is 401015633. The next prime is 401015651. The reversal of 401015636 is 636510104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401015633) 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, 338966 + ... + 340146.

It is an arithmetic number, because the mean of its divisors is an integer number (17066504).

Almost surely, 2^401015636 is an apocalyptic number.

It is an amenable number.

401015636 is an abundant number, since it is smaller than the sum of its proper divisors (418176556).

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

401015636 is a wasteful number, since it uses less digits than its factorization.

401015636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 401015636 is about 20025.3748029843. The cubic root of 401015636 is about 737.4293785101.

The spelling of 401015636 in words is "four hundred one million, fifteen thousand, six hundred thirty-six".