20980176 has 80 divisors (see below), whose sum is σ = 65602944. Its totient is φ = 5640192.

The previous prime is 20980153. The next prime is 20980177. The reversal of 20980176 is 67108902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20980177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3876 + ... + 7548.

Almost surely, 2^20980176 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 20980176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32801472).

20980176 is an abundant number, since it is smaller than the sum of its proper divisors (44622768).

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

20980176 is a wasteful number, since it uses less digits than its factorization.

20980176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708 (or 3702 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 20980176 is about 4580.4122085245. The cubic root of 20980176 is about 275.8055761588.

The spelling of 20980176 in words is "twenty million, nine hundred eighty thousand, one hundred seventy-six".