400601536 has 28 divisors (see below), whose sum is σ = 797036760. Its totient is φ = 199773440.

The previous prime is 400601521. The next prime is 400601569. The reversal of 400601536 is 635106004.

It is a self number, because there is not a number n which added to its sum of digits gives 400601536.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16851 + ... + 32941.

Almost surely, 2^400601536 is an apocalyptic number.

It is an amenable number.

400601536 is a deficient number, since it is larger than the sum of its proper divisors (396435224).

400601536 is a wasteful number, since it uses less digits than its factorization.

400601536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16492 (or 16482 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 400601536 is about 20015.0327504104. The cubic root of 400601536 is about 737.1754609986.

The spelling of 400601536 in words is "four hundred million, six hundred one thousand, five hundred thirty-six".