626042840 has 16 divisors (see below), whose sum is σ = 1408596480. Its totient is φ = 250417120.

The previous prime is 626042783. The next prime is 626042863. The reversal of 626042840 is 48240626.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 626042797 and 626042806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7825496 + ... + 7825575.

It is an arithmetic number, because the mean of its divisors is an integer number (88037280).

Almost surely, 2^626042840 is an apocalyptic number.

It is an amenable number.

626042840 is an abundant number, since it is smaller than the sum of its proper divisors (782553640).

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

626042840 is a wasteful number, since it uses less digits than its factorization.

626042840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15651082 (or 15651078 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 626042840 is about 25020.8481071286. The cubic root of 626042840 is about 855.4632374542.

The spelling of 626042840 in words is "six hundred twenty-six million, forty-two thousand, eight hundred forty".