20396937 has 16 divisors (see below), whose sum is σ = 31230720. Its totient is φ = 11710800.

The previous prime is 20396933. The next prime is 20396939. The reversal of 20396937 is 73969302.

It is not a de Polignac number, because 20396937 - 2² = 20396933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20396895 and 20396904.

It is not an unprimeable number, because it can be changed into a prime (20396933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15639 + ... + 16892.

It is an arithmetic number, because the mean of its divisors is an integer number (1951920).

Almost surely, 2^20396937 is an apocalyptic number.

It is an amenable number.

20396937 is a deficient number, since it is larger than the sum of its proper divisors (10833783).

20396937 is a wasteful number, since it uses less digits than its factorization.

20396937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32564.

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 20396937 is about 4516.2968237263. The cubic root of 20396937 is about 273.2257655588.

The spelling of 20396937 in words is "twenty million, three hundred ninety-six thousand, nine hundred thirty-seven".