28974323516 has 24 divisors (see below), whose sum is σ = 52460184000. Its totient is φ = 13985826624.

The previous prime is 28974323509. The next prime is 28974323519. The reversal of 28974323516 is 61532347982.

It is a super-2 number, since 2×28974323516² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28974323519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1660445 + ... + 1677803.

It is an arithmetic number, because the mean of its divisors is an integer number (2185841000).

Almost surely, 2^28974323516 is an apocalyptic number.

It is an amenable number.

28974323516 is a deficient number, since it is larger than the sum of its proper divisors (23485860484).

28974323516 is a wasteful number, since it uses less digits than its factorization.

28974323516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31781 (or 31779 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The spelling of 28974323516 in words is "twenty-eight billion, nine hundred seventy-four million, three hundred twenty-three thousand, five hundred sixteen".