400252036 has 12 divisors (see below), whose sum is σ = 723036160. Its totient is φ = 193670280.

The previous prime is 400252009. The next prime is 400252079. The reversal of 400252036 is 630252004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400251998 and 400252016.

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, 1613796 + ... + 1614043.

Almost surely, 2^400252036 is an apocalyptic number.

It is an amenable number.

400252036 is a deficient number, since it is larger than the sum of its proper divisors (322784124).

400252036 is a wasteful number, since it uses less digits than its factorization.

400252036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227874 (or 3227872 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 400252036 is about 20006.2999077790. The cubic root of 400252036 is about 736.9610186641.

The spelling of 400252036 in words is "four hundred million, two hundred fifty-two thousand, thirty-six".