20754904 has 16 divisors (see below), whose sum is σ = 39114000. Its totient is φ = 10324512.

The previous prime is 20754887. The next prime is 20754911. The reversal of 20754904 is 40945702.

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 in 3 ways as a sum of consecutive naturals, for example, 4927 + ... + 8110.

It is an arithmetic number, because the mean of its divisors is an integer number (2444625).

Almost surely, 2^20754904 is an apocalyptic number.

It is an amenable number.

20754904 is a deficient number, since it is larger than the sum of its proper divisors (18359096).

20754904 is a wasteful number, since it uses less digits than its factorization.

20754904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13242 (or 13238 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20754904 is about 4555.7550417027. The cubic root of 20754904 is about 274.8148792677.

The spelling of 20754904 in words is "twenty million, seven hundred fifty-four thousand, nine hundred four".