20252090 has 32 divisors (see below), whose sum is σ = 37425024. Its totient is φ = 7888320.

The previous prime is 20252077. The next prime is 20252093. The reversal of 20252090 is 9025202.

It is not an unprimeable number, because it can be changed into a prime (20252093) 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, 111800 + ... + 111980.

It is an arithmetic number, because the mean of its divisors is an integer number (1169532).

Almost surely, 2^20252090 is an apocalyptic number.

20252090 is a deficient number, since it is larger than the sum of its proper divisors (17172934).

20252090 is a wasteful number, since it uses less digits than its factorization.

20252090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 20252090 is about 4500.2322162306. The cubic root of 20252090 is about 272.5774658418.

Adding to 20252090 its reverse (9025202), we get a palindrome (29277292).

The spelling of 20252090 in words is "twenty million, two hundred fifty-two thousand, ninety".