28881174115772 has 24 divisors (see below), whose sum is σ = 55624723125552. Its totient is φ = 13011631136000.

The previous prime is 28881174115727. The next prime is 28881174115777. The reversal of 28881174115772 is 27751147118882.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28881174115777) 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, 2904376979 + ... + 2904386922.

It is an arithmetic number, because the mean of its divisors is an integer number (2317696796898).

Almost surely, 2^{28881174115772} is an apocalyptic number.

28881174115772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28881174115772 is a deficient number, since it is larger than the sum of its proper divisors (26743549009780).

28881174115772 is a wasteful number, since it uses less digits than its factorization.

28881174115772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5808764029 (or 5808764027 counting only the distinct ones).

The product of its digits is 14049280, while the sum is 62.

The spelling of 28881174115772 in words is "twenty-eight trillion, eight hundred eighty-one billion, one hundred seventy-four million, one hundred fifteen thousand, seven hundred seventy-two".