400632 has 16 divisors (see below), whose sum is σ = 1001640. Its totient is φ = 133536.

The previous prime is 400619. The next prime is 400643. The reversal of 400632 is 236004.

It is a zygodrome in base 2.

It is a congruent 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, 8323 + ... + 8370.

2⁴⁰⁰⁶³² is an apocalyptic number.

It is an amenable number.

400632 is an abundant number, since it is smaller than the sum of its proper divisors (601008).

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

400632 is a wasteful number, since it uses less digits than its factorization.

400632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16702 (or 16698 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 400632 is about 632.9549747020. The cubic root of 400632 is about 73.7194146851.

Adding to 400632 its reverse (236004), we get a palindrome (636636).

The spelling of 400632 in words is "four hundred thousand, six hundred thirty-two".