20936004 has 24 divisors (see below), whose sum is σ = 49402080. Its totient is φ = 6899904.

The previous prime is 20935997. The next prime is 20936017. The reversal of 20936004 is 40063902.

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, 8734 + ... + 10869.

It is an arithmetic number, because the mean of its divisors is an integer number (2058420).

Almost surely, 2^20936004 is an apocalyptic number.

It is an amenable number.

20936004 is an abundant number, since it is smaller than the sum of its proper divisors (28466076).

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

20936004 is a wasteful number, since it uses less digits than its factorization.

20936004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19699 (or 19697 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 20936004 is about 4575.5878310879. The cubic root of 20936004 is about 275.6118783249.

Adding to 20936004 its reverse (40063902), we get a palindrome (60999906).

The spelling of 20936004 in words is "twenty million, nine hundred thirty-six thousand, four".