624126138 has 16 divisors (see below), whose sum is σ = 1281989280. Its totient is φ = 202419216.

The previous prime is 624126127. The next prime is 624126157. The reversal of 624126138 is 831621426.

624126138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×624126138² = 779066872269590088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 624126099 and 624126108.

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, 1405468 + ... + 1405911.

It is an arithmetic number, because the mean of its divisors is an integer number (80124330).

Almost surely, 2^624126138 is an apocalyptic number.

624126138 is an abundant number, since it is smaller than the sum of its proper divisors (657863142).

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

624126138 is a wasteful number, since it uses less digits than its factorization.

624126138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811421.

The product of its digits is 13824, while the sum is 33.

The square root of 624126138 is about 24982.5166466471. The cubic root of 624126138 is about 854.5893120137.

The spelling of 624126138 in words is "six hundred twenty-four million, one hundred twenty-six thousand, one hundred thirty-eight".