20939790232 has 16 divisors (see below), whose sum is σ = 39448186200. Its totient is φ = 10420273920.

The previous prime is 20939790217. The next prime is 20939790271. The reversal of 20939790232 is 23209793902.

It is a super-2 number, since 2×20939790232² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6200857 + ... + 6204232.

Almost surely, 2^20939790232 is an apocalyptic number.

It is an amenable number.

20939790232 is a deficient number, since it is larger than the sum of its proper divisors (18508395968).

20939790232 is a wasteful number, since it uses less digits than its factorization.

20939790232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12405306 (or 12405302 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 46.

The spelling of 20939790232 in words is "twenty billion, nine hundred thirty-nine million, seven hundred ninety thousand, two hundred thirty-two".