20776908 has 24 divisors (see below), whose sum is σ = 48675312. Its totient is φ = 6897664.

The previous prime is 20776897. The next prime is 20776919. The reversal of 20776908 is 80967702.

It is an interprime number because it is at equal distance from previous prime (20776897) and next prime (20776919).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 285 + ... + 6452.

It is an arithmetic number, because the mean of its divisors is an integer number (2028138).

Almost surely, 2^20776908 is an apocalyptic number.

It is an amenable number.

20776908 is an abundant number, since it is smaller than the sum of its proper divisors (27898404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20776908 is a wasteful number, since it uses less digits than its factorization.

20776908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001 (or 6999 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 20776908 is about 4558.1693693850. The cubic root of 20776908 is about 274.9119630039.

The spelling of 20776908 in words is "twenty million, seven hundred seventy-six thousand, nine hundred eight".