623438880 has 48 divisors (see below), whose sum is σ = 1963833984. Its totient is φ = 166250240.

The previous prime is 623438873. The next prime is 623438911. The reversal of 623438880 is 88834326.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648936 + ... + 649895.

It is an arithmetic number, because the mean of its divisors is an integer number (40913208).

Almost surely, 2^623438880 is an apocalyptic number.

623438880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

623438880 is an abundant number, since it is smaller than the sum of its proper divisors (1340395104).

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

623438880 is a wasteful number, since it uses less digits than its factorization.

623438880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298849 (or 1298841 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 623438880 is about 24968.7580788473. The cubic root of 623438880 is about 854.2755191146.

The spelling of 623438880 in words is "six hundred twenty-three million, four hundred thirty-eight thousand, eight hundred eighty".