400936620 has 72 divisors (see below), whose sum is σ = 1305917424. Its totient is φ = 91641984.

The previous prime is 400936589. The next prime is 400936633. The reversal of 400936620 is 26639004.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65247 + ... + 71126.

It is an arithmetic number, because the mean of its divisors is an integer number (18137742).

Almost surely, 2^400936620 is an apocalyptic number.

It is an amenable number.

400936620 is an abundant number, since it is smaller than the sum of its proper divisors (904980804).

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

400936620 is a wasteful number, since it uses less digits than its factorization.

400936620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136399 (or 136390 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 400936620 is about 20023.4018088835. The cubic root of 400936620 is about 737.3809410411.

The spelling of 400936620 in words is "four hundred million, nine hundred thirty-six thousand, six hundred twenty".