20223892 has 18 divisors (see below), whose sum is σ = 38324958. Its totient is φ = 9333792.

The previous prime is 20223881. The next prime is 20223893. The reversal of 20223892 is 29832202.

It can be written as a sum of positive squares in 3 ways, for example, as 1179396 + 19044496 = 1086^2 + 4364^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20223892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14283 + ... + 15634.

Almost surely, 2^20223892 is an apocalyptic number.

It is an amenable number.

20223892 is a deficient number, since it is larger than the sum of its proper divisors (18101066).

20223892 is a wasteful number, since it uses less digits than its factorization.

20223892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29947 (or 29932 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20223892 is about 4497.0981754905. The cubic root of 20223892 is about 272.4508993260.

It can be divided in two parts, 20223 and 892, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20223892 in words is "twenty million, two hundred twenty-three thousand, eight hundred ninety-two".