20265090 has 32 divisors (see below), whose sum is σ = 48793536. Its totient is φ = 5386560.

The previous prime is 20265067. The next prime is 20265121. The reversal of 20265090 is 9056202.

20265090 is nontrivially palindromic in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 20265090.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10285 + ... + 12095.

It is an arithmetic number, because the mean of its divisors is an integer number (1524798).

Almost surely, 2^20265090 is an apocalyptic number.

20265090 is an abundant number, since it is smaller than the sum of its proper divisors (28528446).

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

20265090 is a wasteful number, since it uses less digits than its factorization.

20265090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20265090 is about 4501.6763544262. The cubic root of 20265090 is about 272.6357766816.

The spelling of 20265090 in words is "twenty million, two hundred sixty-five thousand, ninety".