20798120 has 32 divisors (see below), whose sum is σ = 53481600. Its totient is φ = 7130688.

The previous prime is 20798119. The next prime is 20798137. The reversal of 20798120 is 2189702.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36860 + ... + 37419.

It is an arithmetic number, because the mean of its divisors is an integer number (1671300).

Almost surely, 2^20798120 is an apocalyptic number.

20798120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20798120 is an abundant number, since it is smaller than the sum of its proper divisors (32683480).

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

20798120 is a wasteful number, since it uses less digits than its factorization.

20798120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74297 (or 74293 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 20798120 is about 4560.4955871045. The cubic root of 20798120 is about 275.0054874938.

The spelling of 20798120 in words is "twenty million, seven hundred ninety-eight thousand, one hundred twenty".