20264145 has 32 divisors (see below), whose sum is σ = 35610624. Its totient is φ = 9758400.

The previous prime is 20264141. The next prime is 20264159. The reversal of 20264145 is 54146202.

It is not a de Polignac number, because 20264145 - 2² = 20264141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20264141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31194 + ... + 31836.

It is an arithmetic number, because the mean of its divisors is an integer number (1112832).

Almost surely, 2^20264145 is an apocalyptic number.

It is an amenable number.

20264145 is a deficient number, since it is larger than the sum of its proper divisors (15346479).

20264145 is a wasteful number, since it uses less digits than its factorization.

20264145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20264145 is about 4501.5713923029. The cubic root of 20264145 is about 272.6315387727.

The spelling of 20264145 in words is "twenty million, two hundred sixty-four thousand, one hundred forty-five".