20012504 has 8 divisors (see below), whose sum is σ = 37523460. Its totient is φ = 10006248.

The previous prime is 20012479. The next prime is 20012543. The reversal of 20012504 is 40521002.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1250774 + ... + 1250789.

Almost surely, 2^20012504 is an apocalyptic number.

It is an amenable number.

20012504 is a deficient number, since it is larger than the sum of its proper divisors (17510956).

20012504 is a wasteful number, since it uses less digits than its factorization.

20012504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501569 (or 2501565 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20012504 is about 4473.5337262616. The cubic root of 20012504 is about 271.4983183378.

Adding to 20012504 its reverse (40521002), we get a palindrome (60533506).

The spelling of 20012504 in words is "twenty million, twelve thousand, five hundred four".