626434040 has 16 divisors (see below), whose sum is σ = 1409476680. Its totient is φ = 250573600.

The previous prime is 626434033. The next prime is 626434063. The reversal of 626434040 is 40434626.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 626433994 and 626434012.

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, 7830386 + ... + 7830465.

Almost surely, 2^626434040 is an apocalyptic number.

It is an amenable number.

626434040 is an abundant number, since it is smaller than the sum of its proper divisors (783042640).

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

626434040 is a wasteful number, since it uses less digits than its factorization.

626434040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15660862 (or 15660858 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 626434040 is about 25028.6643670812. The cubic root of 626434040 is about 855.6413868900.

Adding to 626434040 its reverse (40434626), we get a palindrome (666868666).

It can be divided in two parts, 6264 and 34040, that added together give a palindrome (40304).

The spelling of 626434040 in words is "six hundred twenty-six million, four hundred thirty-four thousand, forty".