20239371 has 12 divisors (see below), whose sum is σ = 29509272. Its totient is φ = 13366176.

The previous prime is 20239337. The next prime is 20239381. The reversal of 20239371 is 17393202.

20239371 is a `hidden beast` number, since 202 + 393 + 71 = 666.

It is not a de Polignac number, because 20239371 - 2¹³ = 20231179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20239321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9546 + ... + 11471.

It is an arithmetic number, because the mean of its divisors is an integer number (2459106).

Almost surely, 2^20239371 is an apocalyptic number.

20239371 is a deficient number, since it is larger than the sum of its proper divisors (9269901).

20239371 is a wasteful number, since it uses less digits than its factorization.

20239371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21130 (or 21127 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20239371 is about 4498.8188449859. The cubic root of 20239371 is about 272.5203912581.

The spelling of 20239371 in words is "twenty million, two hundred thirty-nine thousand, three hundred seventy-one".