623328732 has 72 divisors (see below), whose sum is σ = 1796676336. Its totient is φ = 180509184.

The previous prime is 623328653. The next prime is 623328733. The reversal of 623328732 is 237823326.

It is a happy number.

623328732 is a `hidden beast` number, since 623 + 3 + 28 + 7 + 3 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623328733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31218 + ... + 47129.

It is an arithmetic number, because the mean of its divisors is an integer number (24953838).

Almost surely, 2^623328732 is an apocalyptic number.

It is an amenable number.

623328732 is an abundant number, since it is smaller than the sum of its proper divisors (1173347604).

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

623328732 is a wasteful number, since it uses less digits than its factorization.

623328732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78387 (or 78382 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 623328732 is about 24966.5522649804. The cubic root of 623328732 is about 854.2252055580.

The spelling of 623328732 in words is "six hundred twenty-three million, three hundred twenty-eight thousand, seven hundred thirty-two".