20413504 has 28 divisors (see below), whose sum is σ = 40654224. Its totient is φ = 10169984.

The previous prime is 20413499. The next prime is 20413511. The reversal of 20413504 is 40531402.

It is a super-2 number, since 2×20413504² = 833422291116032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29547 + ... + 30229.

Almost surely, 2^20413504 is an apocalyptic number.

It is an amenable number.

20413504 is a deficient number, since it is larger than the sum of its proper divisors (20240720).

20413504 is an equidigital number, since it uses as much as digits as its factorization.

20413504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20413504 is about 4518.1305868689. The cubic root of 20413504 is about 273.2997195759.

Adding to 20413504 its reverse (40531402), we get a palindrome (60944906).

The spelling of 20413504 in words is "twenty million, four hundred thirteen thousand, five hundred four".