28748680474 has 24 divisors (see below), whose sum is σ = 45702809280. Its totient is φ = 13560736392.

The previous prime is 28748680463. The next prime is 28748680487. The reversal of 28748680474 is 47408684782.

It is a super-2 number, since 2×28748680474² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89257 + ... + 255859.

It is an arithmetic number, because the mean of its divisors is an integer number (1904283720).

Almost surely, 2^28748680474 is an apocalyptic number.

28748680474 is a deficient number, since it is larger than the sum of its proper divisors (16954128806).

28748680474 is a wasteful number, since it uses less digits than its factorization.

28748680474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166882 (or 166863 counting only the distinct ones).

The product of its (nonzero) digits is 19267584, while the sum is 58.

The spelling of 28748680474 in words is "twenty-eight billion, seven hundred forty-eight million, six hundred eighty thousand, four hundred seventy-four".