20872024 has 16 divisors (see below), whose sum is σ = 39247200. Its totient is φ = 10406112.

The previous prime is 20872003. The next prime is 20872031. The reversal of 20872024 is 42027802.

It is a self number, because there is not a number n which added to its sum of digits gives 20872024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619 + ... + 6490.

It is an arithmetic number, because the mean of its divisors is an integer number (2452950).

Almost surely, 2^20872024 is an apocalyptic number.

It is an amenable number.

20872024 is a deficient number, since it is larger than the sum of its proper divisors (18375176).

20872024 is a wasteful number, since it uses less digits than its factorization.

20872024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482 (or 7478 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 20872024 is about 4568.5910300661. The cubic root of 20872024 is about 275.3308370905.

Adding to 20872024 its reverse (42027802), we get a palindrome (62899826).

The spelling of 20872024 in words is "twenty million, eight hundred seventy-two thousand, twenty-four".