20380504 has 32 divisors (see below), whose sum is σ = 39949200. Its totient is φ = 9735040.

The previous prime is 20380489. The next prime is 20380537. The reversal of 20380504 is 40508302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24414 + ... + 25234.

Almost surely, 2^20380504 is an apocalyptic number.

It is an amenable number.

20380504 is a deficient number, since it is larger than the sum of its proper divisors (19568696).

20380504 is a wasteful number, since it uses less digits than its factorization.

20380504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20380504 is about 4514.4771568810. The cubic root of 20380504 is about 273.1523701379.

Adding to 20380504 its reverse (40508302), we get a palindrome (60888806).

The spelling of 20380504 in words is "twenty million, three hundred eighty thousand, five hundred four".