20748892 has 12 divisors (see below), whose sum is σ = 36343216. Its totient is φ = 10365120.

The previous prime is 20748887. The next prime is 20748901. The reversal of 20748892 is 29884702.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5908 + ... + 8740.

Almost surely, 2^20748892 is an apocalyptic number.

It is an amenable number.

20748892 is a deficient number, since it is larger than the sum of its proper divisors (15594324).

20748892 is a wasteful number, since it uses less digits than its factorization.

20748892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668 (or 4666 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 20748892 is about 4555.0951691485. The cubic root of 20748892 is about 274.7883418189.

The spelling of 20748892 in words is "twenty million, seven hundred forty-eight thousand, eight hundred ninety-two".