20040508 has 24 divisors (see below), whose sum is σ = 37457280. Its totient is φ = 9360960.

The previous prime is 20040499. The next prime is 20040509. The reversal of 20040508 is 80504002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040509) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 810 + ... + 6382.

It is an arithmetic number, because the mean of its divisors is an integer number (1560720).

Almost surely, 2^20040508 is an apocalyptic number.

It is an amenable number.

20040508 is a deficient number, since it is larger than the sum of its proper divisors (17416772).

20040508 is a wasteful number, since it uses less digits than its factorization.

20040508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5637 (or 5635 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20040508 is about 4476.6625961759. The cubic root of 20040508 is about 271.6248974554.

The spelling of 20040508 in words is "twenty million, forty thousand, five hundred eight".