20164293 has 6 divisors (see below), whose sum is σ = 29126214. Its totient is φ = 13442856.

The previous prime is 20164283. The next prime is 20164321. The reversal of 20164293 is 39246102.

It can be written as a sum of positive squares in only one way, i.e., 17994564 + 2169729 = 4242^2 + 1473^2 .

It is not a de Polignac number, because 20164293 - 2²⁴ = 3387077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20164273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1120230 + ... + 1120247.

It is an arithmetic number, because the mean of its divisors is an integer number (4854369).

Almost surely, 2^20164293 is an apocalyptic number.

It is an amenable number.

20164293 is a deficient number, since it is larger than the sum of its proper divisors (8961921).

20164293 is a wasteful number, since it uses less digits than its factorization.

20164293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240483 (or 2240480 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20164293 is about 4490.4669022274. The cubic root of 20164293 is about 272.1830020286.

The spelling of 20164293 in words is "twenty million, one hundred sixty-four thousand, two hundred ninety-three".