20872760 has 16 divisors (see below), whose sum is σ = 46963800. Its totient is φ = 8349088.

The previous prime is 20872727. The next prime is 20872763. The reversal of 20872760 is 6727802.

It is a super-2 number, since 2×20872760² = 871344220035200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20872763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260870 + ... + 260949.

Almost surely, 2^20872760 is an apocalyptic number.

20872760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20872760 is an abundant number, since it is smaller than the sum of its proper divisors (26091040).

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

20872760 is a wasteful number, since it uses less digits than its factorization.

20872760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521830 (or 521826 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 20872760 is about 4568.6715793543. The cubic root of 20872760 is about 275.3340733382.

The spelling of 20872760 in words is "twenty million, eight hundred seventy-two thousand, seven hundred sixty".