20022980 has 24 divisors (see below), whose sum is σ = 42154560. Its totient is φ = 7988960.

The previous prime is 20022971. The next prime is 20023001. The reversal of 20022980 is 8922002.

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, 8801 + ... + 10839.

It is an arithmetic number, because the mean of its divisors is an integer number (1756440).

Almost surely, 2^20022980 is an apocalyptic number.

20022980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022980 is an abundant number, since it is smaller than the sum of its proper divisors (22131580).

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

20022980 is a wasteful number, since it uses less digits than its factorization.

20022980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539 (or 2537 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 20022980 is about 4474.7044595146. The cubic root of 20022980 is about 271.5456840621.

Adding to 20022980 its reverse (8922002), we get a palindrome (28944982).

The spelling of 20022980 in words is "twenty million, twenty-two thousand, nine hundred eighty".