40508508 has 24 divisors (see below), whose sum is σ = 94651648. Its totient is φ = 13484016.

The previous prime is 40508491. The next prime is 40508509. The reversal of 40508508 is 80580504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40508509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8685 + ... + 12507.

Almost surely, 2^40508508 is an apocalyptic number.

It is an amenable number.

40508508 is an abundant number, since it is smaller than the sum of its proper divisors (54143140).

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

40508508 is a wasteful number, since it uses less digits than its factorization.

40508508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713 (or 4711 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 40508508 is about 6364.6294471870. The cubic root of 40508508 is about 343.4383185607.

The spelling of 40508508 in words is "forty million, five hundred eight thousand, five hundred eight".