20051392 has 28 divisors (see below), whose sum is σ = 40041576. Its totient is φ = 9962240.

The previous prime is 20051363. The next prime is 20051407. The reversal of 20051392 is 29315002.

It is a super-2 number, since 2×20051392² = 804116642275328, which contains 22 as substring.

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, 10167 + ... + 11977.

Almost surely, 2^20051392 is an apocalyptic number.

It is an amenable number.

20051392 is a deficient number, since it is larger than the sum of its proper divisors (19990184).

20051392 is a wasteful number, since it uses less digits than its factorization.

20051392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 20051392 is about 4477.8780689072. The cubic root of 20051392 is about 271.6740617171.

Adding to 20051392 its reverse (29315002), we get a palindrome (49366394).

The spelling of 20051392 in words is "twenty million, fifty-one thousand, three hundred ninety-two".