20233090 has 32 divisors (see below), whose sum is σ = 37966320. Its totient is φ = 7756800.

The previous prime is 20233069. The next prime is 20233093. The reversal of 20233090 is 9033202.

It can be written as a sum of positive squares in 8 ways, for example, as 2331729 + 17901361 = 1527^2 + 4231^2 .

It is not an unprimeable number, because it can be changed into a prime (20233093) 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, 24606 + ... + 25414.

Almost surely, 2^20233090 is an apocalyptic number.

20233090 is a deficient number, since it is larger than the sum of its proper divisors (17733230).

20233090 is a wasteful number, since it uses less digits than its factorization.

20233090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 20233090 is about 4498.1207187002. The cubic root of 20233090 is about 272.4921974030.

Adding to 20233090 its reverse (9033202), we get a palindrome (29266292).

The spelling of 20233090 in words is "twenty million, two hundred thirty-three thousand, ninety".