20776108 has 24 divisors (see below), whose sum is σ = 38670912. Its totient is φ = 9732864.

The previous prime is 20776087. The next prime is 20776109. The reversal of 20776108 is 80167702.

It is a happy number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20776108.

It is not an unprimeable number, because it can be changed into a prime (20776109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18285 + ... + 19387.

It is an arithmetic number, because the mean of its divisors is an integer number (1611288).

Almost surely, 2^20776108 is an apocalyptic number.

It is an amenable number.

20776108 is a deficient number, since it is larger than the sum of its proper divisors (17894804).

20776108 is a wasteful number, since it uses less digits than its factorization.

20776108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 20776108 is about 4558.0816140126. The cubic root of 20776108 is about 274.9084345290.

The spelling of 20776108 in words is "twenty million, seven hundred seventy-six thousand, one hundred eight".