406624332 has 12 divisors (see below), whose sum is σ = 948790136. Its totient is φ = 135541440.

The previous prime is 406624331. The next prime is 406624363. The reversal of 406624332 is 233426604.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 406624332.

It is not an unprimeable number, because it can be changed into a prime (406624331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16942669 + ... + 16942692.

Almost surely, 2^406624332 is an apocalyptic number.

It is an amenable number.

406624332 is an abundant number, since it is smaller than the sum of its proper divisors (542165804).

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

406624332 is a wasteful number, since it uses less digits than its factorization.

406624332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33885368 (or 33885366 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 406624332 is about 20164.9282666713. The cubic root of 406624332 is about 740.8514256440.

The spelling of 406624332 in words is "four hundred six million, six hundred twenty-four thousand, three hundred thirty-two".