20393307 has 12 divisors (see below), whose sum is σ = 32135064. Its totient is φ = 12359520.

The previous prime is 20393299. The next prime is 20393311. The reversal of 20393307 is 70339302.

It is not a de Polignac number, because 20393307 - 2³ = 20393299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20393407) 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, 102898 + ... + 103095.

It is an arithmetic number, because the mean of its divisors is an integer number (2677922).

Almost surely, 2^20393307 is an apocalyptic number.

20393307 is a deficient number, since it is larger than the sum of its proper divisors (11741757).

20393307 is a wasteful number, since it uses less digits than its factorization.

20393307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206010 (or 206007 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 27.

The square root of 20393307 is about 4515.8949279185. The cubic root of 20393307 is about 273.2095561254.

The spelling of 20393307 in words is "twenty million, three hundred ninety-three thousand, three hundred seven".