623274440 has 16 divisors (see below), whose sum is σ = 1402367580. Its totient is φ = 249309760.

The previous prime is 623274413. The next prime is 623274469. The reversal of 623274440 is 44472326.

It can be written as a sum of positive squares in 2 ways, for example, as 553284484 + 69989956 = 23522^2 + 8366^2 .

It is a junction number, because it is equal to n+sod(n) for n = 623274397 and 623274406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7790891 + ... + 7790970.

Almost surely, 2^623274440 is an apocalyptic number.

It is an amenable number.

623274440 is an abundant number, since it is smaller than the sum of its proper divisors (779093140).

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

623274440 is a wasteful number, since it uses less digits than its factorization.

623274440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15581872 (or 15581868 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 623274440 is about 24965.4649466017. The cubic root of 623274440 is about 854.2004038020.

The spelling of 623274440 in words is "six hundred twenty-three million, two hundred seventy-four thousand, four hundred forty".