20920176 has 60 divisors (see below), whose sum is σ = 59047560. Its totient is φ = 6913920.

The previous prime is 20920157. The next prime is 20920181. The reversal of 20920176 is 67102902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18310 + ... + 19418.

It is an arithmetic number, because the mean of its divisors is an integer number (984126).

Almost surely, 2^20920176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20920176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29523780).

20920176 is an abundant number, since it is smaller than the sum of its proper divisors (38127384).

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

20920176 is a wasteful number, since it uses less digits than its factorization.

20920176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 20920176 is about 4573.8578902279. The cubic root of 20920176 is about 275.5424049492.

The spelling of 20920176 in words is "twenty million, nine hundred twenty thousand, one hundred seventy-six".