20892712 has 16 divisors (see below), whose sum is σ = 39224340. Its totient is φ = 10432896.

The previous prime is 20892709. The next prime is 20892719. The reversal of 20892712 is 21729802.

It can be written as a sum of positive squares in 2 ways, for example, as 15256836 + 5635876 = 3906^2 + 2374^2 .

It is not an unprimeable number, because it can be changed into a prime (20892719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8628 + ... + 10780.

Almost surely, 2^20892712 is an apocalyptic number.

It is an amenable number.

20892712 is a deficient number, since it is larger than the sum of its proper divisors (18331628).

20892712 is a wasteful number, since it uses less digits than its factorization.

20892712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372 (or 3368 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 20892712 is about 4570.8546246845. The cubic root of 20892712 is about 275.4217748206.

The spelling of 20892712 in words is "twenty million, eight hundred ninety-two thousand, seven hundred twelve".