28238232765472 has 48 divisors (see below), whose sum is σ = 58968812542752. Its totient is φ = 13264976819200.

The previous prime is 28238232765469. The next prime is 28238232765503. The reversal of 28238232765472 is 27456723283282.

It is a self number, because there is not a number n which added to its sum of digits gives 28238232765472.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45793654 + ... + 46406197.

It is an arithmetic number, because the mean of its divisors is an integer number (1228516927974).

Almost surely, 2^{28238232765472} is an apocalyptic number.

It is an amenable number.

28238232765472 is an abundant number, since it is smaller than the sum of its proper divisors (30730579777280).

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

28238232765472 is a wasteful number, since it uses less digits than its factorization.

28238232765472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92200441 (or 92200433 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 61.

The spelling of 28238232765472 in words is "twenty-eight trillion, two hundred thirty-eight billion, two hundred thirty-two million, seven hundred sixty-five thousand, four hundred seventy-two".