20464317 has 24 divisors (see below), whose sum is σ = 30551040. Its totient is φ = 13192800.

The previous prime is 20464291. The next prime is 20464321. The reversal of 20464317 is 71346402.

20464317 is a `hidden beast` number, since 2 + 0 + 4 + 643 + 17 = 666.

It is not a de Polignac number, because 20464317 - 2¹⁰ = 20463293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20464337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42484 + ... + 42962.

It is an arithmetic number, because the mean of its divisors is an integer number (1272960).

Almost surely, 2^20464317 is an apocalyptic number.

It is an amenable number.

20464317 is a deficient number, since it is larger than the sum of its proper divisors (10086723).

20464317 is a wasteful number, since it uses less digits than its factorization.

20464317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20464317 is about 4523.7503246753. The cubic root of 20464317 is about 273.5262962572.

The spelling of 20464317 in words is "twenty million, four hundred sixty-four thousand, three hundred seventeen".