28196959372 has 24 divisors (see below), whose sum is σ = 49607600000. Its totient is φ = 14023466496.

The previous prime is 28196959333. The next prime is 28196959379. The reversal of 28196959372 is 27395969182.

It is a self number, because there is not a number n which added to its sum of digits gives 28196959372.

It is not an unprimeable number, because it can be changed into a prime (28196959379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101454 + ... + 1126762.

Almost surely, 2^28196959372 is an apocalyptic number.

It is an amenable number.

28196959372 is a deficient number, since it is larger than the sum of its proper divisors (21410640628).

28196959372 is a wasteful number, since it uses less digits than its factorization.

28196959372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26785 (or 26783 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 61.

The spelling of 28196959372 in words is "twenty-eight billion, one hundred ninety-six million, nine hundred fifty-nine thousand, three hundred seventy-two".