623305438 has 16 divisors (see below), whose sum is σ = 1071759744. Its totient is φ = 266321880.

The previous prime is 623305429. The next prime is 623305447. The reversal of 623305438 is 834503326.

It is an interprime number because it is at equal distance from previous prime (623305429) and next prime (623305447).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62620 + ... + 71887.

It is an arithmetic number, because the mean of its divisors is an integer number (66984984).

Almost surely, 2^623305438 is an apocalyptic number.

623305438 is a deficient number, since it is larger than the sum of its proper divisors (448454306).

623305438 is a wasteful number, since it uses less digits than its factorization.

623305438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134847.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 623305438 is about 24966.0857564817. The cubic root of 623305438 is about 854.2145645330.

The spelling of 623305438 in words is "six hundred twenty-three million, three hundred five thousand, four hundred thirty-eight".