20026980 has 48 divisors (see below), whose sum is σ = 62307840. Its totient is φ = 5340384.

The previous prime is 20026967. The next prime is 20026991. The reversal of 20026980 is 8962002.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18004 + ... + 19083.

It is an arithmetic number, because the mean of its divisors is an integer number (1298080).

Almost surely, 2^20026980 is an apocalyptic number.

20026980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20026980 is an abundant number, since it is smaller than the sum of its proper divisors (42280860).

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

20026980 is a wasteful number, since it uses less digits than its factorization.

20026980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37105 (or 37097 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20026980 is about 4475.1513940871. The cubic root of 20026980 is about 271.5637651272.

Adding to 20026980 its reverse (8962002), we get a palindrome (28988982).

The spelling of 20026980 in words is "twenty million, twenty-six thousand, nine hundred eighty".