20425768 has 24 divisors (see below), whose sum is σ = 42098490. Its totient is φ = 9284000.

The previous prime is 20425759. The next prime is 20425781. The reversal of 20425768 is 86752402.

It can be written as a sum of positive squares in only one way, i.e., 19166884 + 1258884 = 4378^2 + 1122^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9583 + ... + 11518.

Almost surely, 2^20425768 is an apocalyptic number.

It is an amenable number.

20425768 is an abundant number, since it is smaller than the sum of its proper divisors (21672722).

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

20425768 is a wasteful number, since it uses less digits than its factorization.

20425768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21129 (or 21114 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 20425768 is about 4519.4875815738. The cubic root of 20425768 is about 273.3544395097.

The spelling of 20425768 in words is "twenty million, four hundred twenty-five thousand, seven hundred sixty-eight".