28280574830502 has 40 divisors (see below), whose sum is σ = 63377481882000. Its totient is φ = 9425661397776.

The previous prime is 28280574830477. The next prime is 28280574830503. The reversal of 28280574830502 is 20503847508282.

28280574830502 is a `hidden beast` number, since 2 + 8 + 2 + 8 + 0 + 57 + 4 + 83 + 0 + 502 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28280574830503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9801877 + ... + 12354672.

It is an arithmetic number, because the mean of its divisors is an integer number (1584437047050).

Almost surely, 2^{28280574830502} is an apocalyptic number.

28280574830502 is an abundant number, since it is smaller than the sum of its proper divisors (35096907051498).

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

28280574830502 is a wasteful number, since it uses less digits than its factorization.

28280574830502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22164442 (or 22164433 counting only the distinct ones).

The product of its (nonzero) digits is 8601600, while the sum is 54.

The spelling of 28280574830502 in words is "twenty-eight trillion, two hundred eighty billion, five hundred seventy-four million, eight hundred thirty thousand, five hundred two".