20018792 has 16 divisors (see below), whose sum is σ = 39743460. Its totient is φ = 9420544.

The previous prime is 20018773. The next prime is 20018807. The reversal of 20018792 is 29781002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20016676 + 2116 = 4474^2 + 46^2 .

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, 73463 + ... + 73734.

Almost surely, 2^20018792 is an apocalyptic number.

It is an amenable number.

20018792 is a deficient number, since it is larger than the sum of its proper divisors (19724668).

20018792 is a wasteful number, since it uses less digits than its factorization.

20018792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147220 (or 147216 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 20018792 is about 4474.2364711758. The cubic root of 20018792 is about 271.5267506063.

Adding to 20018792 its reverse (29781002), we get a palindrome (49799794).

The spelling of 20018792 in words is "twenty million, eighteen thousand, seven hundred ninety-two".