623920338 has 24 divisors (see below), whose sum is σ = 1352383500. Its totient is φ = 207887904.

The previous prime is 623920313. The next prime is 623920343. The reversal of 623920338 is 833029326.

623920338 is a `hidden beast` number, since 623 + 9 + 20 + 3 + 3 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 577585089 + 46335249 = 24033^2 + 6807^2 .

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 50388 + ... + 61536.

Almost surely, 2^623920338 is an apocalyptic number.

623920338 is an abundant number, since it is smaller than the sum of its proper divisors (728463162).

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

623920338 is a wasteful number, since it uses less digits than its factorization.

623920338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266 (or 14263 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 623920338 is about 24978.3974265764. The cubic root of 623920338 is about 854.4953706322.

It can be divided in two parts, 62 and 3920338, that added together give a square (3920400 = 1980²).

The spelling of 623920338 in words is "six hundred twenty-three million, nine hundred twenty thousand, three hundred thirty-eight".