20876806 has 16 divisors (see below), whose sum is σ = 32774544. Its totient is φ = 9962784.

The previous prime is 20876783. The next prime is 20876809. The reversal of 20876806 is 60867802.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20876809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261 + ... + 6583.

It is an arithmetic number, because the mean of its divisors is an integer number (2048409).

Almost surely, 2^20876806 is an apocalyptic number.

20876806 is a deficient number, since it is larger than the sum of its proper divisors (11897738).

20876806 is a wasteful number, since it uses less digits than its factorization.

20876806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5415.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 20876806 is about 4569.1143561964. The cubic root of 20876806 is about 275.3518625475.

The spelling of 20876806 in words is "twenty million, eight hundred seventy-six thousand, eight hundred six".