423906732 has 36 divisors (see below), whose sum is σ = 1085113120. Its totient is φ = 139512672.

The previous prime is 423906727. The next prime is 423906787. The reversal of 423906732 is 237609324.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 71683 + ... + 77370.

Almost surely, 2^423906732 is an apocalyptic number.

It is an amenable number.

423906732 is an abundant number, since it is smaller than the sum of its proper divisors (661206388).

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

423906732 is a wasteful number, since it uses less digits than its factorization.

423906732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149142 (or 149137 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 423906732 is about 20588.9954101700. The cubic root of 423906732 is about 751.2020617009.

The spelling of 423906732 in words is "four hundred twenty-three million, nine hundred six thousand, seven hundred thirty-two".