40400624 has 20 divisors (see below), whose sum is σ = 85392600. Its totient is φ = 18363840.

The previous prime is 40400603. The next prime is 40400713. The reversal of 40400624 is 42600404.

40400624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40400596 and 40400605.

It is a congruent number.

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, 114599 + ... + 114950.

It is an arithmetic number, because the mean of its divisors is an integer number (4269630).

Almost surely, 2^40400624 is an apocalyptic number.

40400624 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40400624 is an abundant number, since it is smaller than the sum of its proper divisors (44991976).

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

40400624 is a wasteful number, since it uses less digits than its factorization.

40400624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229568 (or 229562 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40400624 is about 6356.1485193472. The cubic root of 40400624 is about 343.1331609323.

The spelling of 40400624 in words is "forty million, four hundred thousand, six hundred twenty-four".