28320788674 has 16 divisors (see below), whose sum is σ = 44418507840. Its totient is φ = 13517128240.

The previous prime is 28320788669. The next prime is 28320788693. The reversal of 28320788674 is 47688702382.

It is a super-2 number, since 2×28320788674² (a number of 22 digits) contains 22 as substring.

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, 604369 + ... + 649540.

It is an arithmetic number, because the mean of its divisors is an integer number (2776156740).

Almost surely, 2^28320788674 is an apocalyptic number.

28320788674 is a deficient number, since it is larger than the sum of its proper divisors (16097719166).

28320788674 is a wasteful number, since it uses less digits than its factorization.

28320788674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254425.

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 28320788674 in words is "twenty-eight billion, three hundred twenty million, seven hundred eighty-eight thousand, six hundred seventy-four".