12693531928 has 48 divisors (see below), whose sum is σ = 30203080200. Its totient is φ = 4945530240.

The previous prime is 12693531863. The next prime is 12693531973. The reversal of 12693531928 is 82913539621.

It is a super-2 number, since 2×12693531928² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1467573 + ... + 1476196.

Almost surely, 2^12693531928 is an apocalyptic number.

It is an amenable number.

12693531928 is an abundant number, since it is smaller than the sum of its proper divisors (17509548272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12693531928 is a wasteful number, since it uses less digits than its factorization.

12693531928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943800 (or 2943789 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The spelling of 12693531928 in words is "twelve billion, six hundred ninety-three million, five hundred thirty-one thousand, nine hundred twenty-eight".