20879116 has 12 divisors (see below), whose sum is σ = 36772288. Its totient is φ = 10372752.

The previous prime is 20879113. The next prime is 20879129. The reversal of 20879116 is 61197802.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20879113) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15996 + ... + 17251.

Almost surely, 2^20879116 is an apocalyptic number.

It is an amenable number.

20879116 is a deficient number, since it is larger than the sum of its proper divisors (15893172).

20879116 is a wasteful number, since it uses less digits than its factorization.

20879116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33408 (or 33406 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 20879116 is about 4569.3671334223. The cubic root of 20879116 is about 275.3620179857.

The spelling of 20879116 in words is "twenty million, eight hundred seventy-nine thousand, one hundred sixteen".