20776156 has 12 divisors (see below), whose sum is σ = 36403920. Its totient is φ = 10375040.

The previous prime is 20776141. The next prime is 20776213. The reversal of 20776156 is 65167702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (3033660).

Almost surely, 2^20776156 is an apocalyptic number.

It is an amenable number.

20776156 is a deficient number, since it is larger than the sum of its proper divisors (15627764).

20776156 is a wasteful number, since it uses less digits than its factorization.

20776156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6524 (or 6522 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 20776156 is about 4558.0868793826. The cubic root of 20776156 is about 274.9086462401.

The spelling of 20776156 in words is "twenty million, seven hundred seventy-six thousand, one hundred fifty-six".