40624540 has 36 divisors (see below), whose sum is σ = 93777768. Its totient is φ = 14771680.

The previous prime is 40624511. The next prime is 40624547. The reversal of 40624540 is 4542604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40624547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5974 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (2604938).

Almost surely, 2^40624540 is an apocalyptic number.

It is an amenable number.

40624540 is an abundant number, since it is smaller than the sum of its proper divisors (53153228).

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

40624540 is a wasteful number, since it uses less digits than its factorization.

40624540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16818 (or 16805 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 40624540 is about 6373.7383065200. The cubic root of 40624540 is about 343.7659192628.

The spelling of 40624540 in words is "forty million, six hundred twenty-four thousand, five hundred forty".