20554904 has 32 divisors (see below), whose sum is σ = 41018400. Its totient is φ = 9623040.

The previous prime is 20554901. The next prime is 20554907. The reversal of 20554904 is 40945502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20554901) and next prime (20554907).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48614 + ... + 49034.

It is an arithmetic number, because the mean of its divisors is an integer number (1281825).

Almost surely, 2^20554904 is an apocalyptic number.

It is an amenable number.

20554904 is a deficient number, since it is larger than the sum of its proper divisors (20463496).

20554904 is a wasteful number, since it uses less digits than its factorization.

20554904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 20554904 is about 4533.7516473667. The cubic root of 20554904 is about 273.9292978286.

The spelling of 20554904 in words is "twenty million, five hundred fifty-four thousand, nine hundred four".