623907328 has 80 divisors (see below), whose sum is σ = 1389446784. Its totient is φ = 277442560.

The previous prime is 623907299. The next prime is 623907337. The reversal of 623907328 is 823709326.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263526 + ... + 265882.

Almost surely, 2^623907328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623907328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (694723392).

623907328 is an abundant number, since it is smaller than the sum of its proper divisors (765539456).

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

623907328 is a wasteful number, since it uses less digits than its factorization.

623907328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433 (or 2417 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 623907328 is about 24978.1370001848. The cubic root of 623907328 is about 854.4894312724.

The spelling of 623907328 in words is "six hundred twenty-three million, nine hundred seven thousand, three hundred twenty-eight".