626430540 has 24 divisors (see below), whose sum is σ = 1754005680. Its totient is φ = 167048128.

The previous prime is 626430517. The next prime is 626430613. The reversal of 626430540 is 45034626.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 626430498 and 626430507.

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 7 ways as a sum of consecutive naturals, for example, 5220195 + ... + 5220314.

It is an arithmetic number, because the mean of its divisors is an integer number (73083570).

Almost surely, 2^626430540 is an apocalyptic number.

626430540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

626430540 is an abundant number, since it is smaller than the sum of its proper divisors (1127575140).

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

626430540 is a wasteful number, since it uses less digits than its factorization.

626430540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10440521 (or 10440519 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 626430540 is about 25028.5944471518. The cubic root of 626430540 is about 855.6397933461.

The spelling of 626430540 in words is "six hundred twenty-six million, four hundred thirty thousand, five hundred forty".