20904327 has 12 divisors (see below), whose sum is σ = 30434560. Its totient is φ = 13825728.

The previous prime is 20904319. The next prime is 20904337. The reversal of 20904327 is 72340902.

It is not a de Polignac number, because 20904327 - 2³ = 20904319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20904327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20904337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8002 + ... + 10287.

Almost surely, 2^20904327 is an apocalyptic number.

20904327 is a deficient number, since it is larger than the sum of its proper divisors (9530233).

20904327 is a wasteful number, since it uses less digits than its factorization.

20904327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18422 (or 18419 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20904327 is about 4572.1249982913. The cubic root of 20904327 is about 275.4728042781.

The spelling of 20904327 in words is "twenty million, nine hundred four thousand, three hundred twenty-seven".