20268790 has 32 divisors (see below), whose sum is σ = 37558080. Its totient is φ = 7872384.

The previous prime is 20268769. The next prime is 20268791. The reversal of 20268790 is 9786202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20268791) 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, 88396 + ... + 88624.

It is an arithmetic number, because the mean of its divisors is an integer number (1173690).

Almost surely, 2^20268790 is an apocalyptic number.

20268790 is a deficient number, since it is larger than the sum of its proper divisors (17289290).

20268790 is a wasteful number, since it uses less digits than its factorization.

20268790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20268790 is about 4502.0872936895. The cubic root of 20268790 is about 272.6523682846.

It can be divided in two parts, 2026 and 8790, that added together give a square (10816 = 104²).

The spelling of 20268790 in words is "twenty million, two hundred sixty-eight thousand, seven hundred ninety".