20610868 has 24 divisors (see below), whose sum is σ = 38581704. Its totient is φ = 9600000.

The previous prime is 20610859. The next prime is 20610881. The reversal of 20610868 is 86801602.

It can be written as a sum of positive squares in 4 ways, for example, as 11682724 + 8928144 = 3418^2 + 2988^2 .

It is a congruent number.

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, 5368 + ... + 8368.

It is an arithmetic number, because the mean of its divisors is an integer number (1607571).

Almost surely, 2^20610868 is an apocalyptic number.

It is an amenable number.

20610868 is a deficient number, since it is larger than the sum of its proper divisors (17970836).

20610868 is a wasteful number, since it uses less digits than its factorization.

20610868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123 (or 3121 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 20610868 is about 4539.9193825441. The cubic root of 20610868 is about 274.1776779277.

The spelling of 20610868 in words is "twenty million, six hundred ten thousand, eight hundred sixty-eight".