20375904 has 48 divisors (see below), whose sum is σ = 56306880. Its totient is φ = 6433920.

The previous prime is 20375881. The next prime is 20375909. The reversal of 20375904 is 40957302.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20375909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3762 + ... + 7409.

It is an arithmetic number, because the mean of its divisors is an integer number (1173060).

Almost surely, 2^20375904 is an apocalyptic number.

20375904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20375904 is an abundant number, since it is smaller than the sum of its proper divisors (35930976).

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

20375904 is a wasteful number, since it uses less digits than its factorization.

20375904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11203 (or 11195 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 20375904 is about 4513.9676560649. The cubic root of 20375904 is about 273.1318178910.

The spelling of 20375904 in words is "twenty million, three hundred seventy-five thousand, nine hundred four".