28496520879372 has 768 divisors, whose sum is σ = 98978863513600. Its totient is φ = 6878027520000.

The previous prime is 28496520879347. The next prime is 28496520879397. The reversal of 28496520879372 is 27397802569482.

28496520879372 is a `hidden beast` number, since 2 + 8 + 4 + 9 + 6 + 520 + 8 + 7 + 93 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (28496520879347) and next prime (28496520879397).

It is a super-2 number, since 2×28496520879372² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28496520879372.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 3478999797 + ... + 3479007987.

Almost surely, 2^{28496520879372} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28496520879372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49489431756800).

28496520879372 is an abundant number, since it is smaller than the sum of its proper divisors (70482342634228).

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

28496520879372 is a wasteful number, since it uses less digits than its factorization.

28496520879372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875 (or 8867 counting only the distinct ones).

The product of its (nonzero) digits is 731566080, while the sum is 72.

The spelling of 28496520879372 in words is "twenty-eight trillion, four hundred ninety-six billion, five hundred twenty million, eight hundred seventy-nine thousand, three hundred seventy-two".