20951892 has 48 divisors (see below), whose sum is σ = 58502080. Its totient is φ = 6446304.

The previous prime is 20951881. The next prime is 20951899. The reversal of 20951892 is 29815902.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20951899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6058 + ... + 8865.

Almost surely, 2^20951892 is an apocalyptic number.

It is an amenable number.

20951892 is an abundant number, since it is smaller than the sum of its proper divisors (37550188).

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

20951892 is a wasteful number, since it uses less digits than its factorization.

20951892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14949 (or 14941 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 20951892 is about 4577.3236721910. The cubic root of 20951892 is about 275.6815798511.

The spelling of 20951892 in words is "twenty million, nine hundred fifty-one thousand, eight hundred ninety-two".