28715189450724 has 48 divisors (see below), whose sum is σ = 85082042819200. Its totient is φ = 8204339842848.

The previous prime is 28715189450713. The next prime is 28715189450741. The reversal of 28715189450724 is 42705498151782.

28715189450724 is a `hidden beast` number, since 2 + 8 + 7 + 1 + 5 + 18 + 94 + 507 + 24 = 666.

It is a super-3 number, since 3×28715189450724³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18991526659 + ... + 18991528170.

Almost surely, 2^{28715189450724} is an apocalyptic number.

It is an amenable number.

28715189450724 is an abundant number, since it is smaller than the sum of its proper divisors (56366853368476).

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

28715189450724 is a wasteful number, since it uses less digits than its factorization.

28715189450724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37983054849 (or 37983054841 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 28715189450724 in words is "twenty-eight trillion, seven hundred fifteen billion, one hundred eighty-nine million, four hundred fifty thousand, seven hundred twenty-four".