20120980 has 24 divisors (see below), whose sum is σ = 46095840. Its totient is φ = 7316640.

The previous prime is 20120959. The next prime is 20120993. The reversal of 20120980 is 8902102.

20120980 is nontrivially palindromic in base 9.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45510 + ... + 45949.

It is an arithmetic number, because the mean of its divisors is an integer number (1920660).

Almost surely, 2^20120980 is an apocalyptic number.

20120980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120980 is an abundant number, since it is smaller than the sum of its proper divisors (25974860).

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

20120980 is a wasteful number, since it uses less digits than its factorization.

20120980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91479 (or 91477 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 20120980 is about 4485.6415371717. The cubic root of 20120980 is about 271.9879788517.

The spelling of 20120980 in words is "twenty million, one hundred twenty thousand, nine hundred eighty".