28949074688 has 72 divisors (see below), whose sum is σ = 59414885712. Its totient is φ = 14067191808.

The previous prime is 28949074643. The next prime is 28949074703. The reversal of 28949074688 is 88647094982.

It is a Smith number, since the sum of its digits (65) 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 7 ways as a sum of consecutive naturals, for example, 15504731 + ... + 15506597.

It is an arithmetic number, because the mean of its divisors is an integer number (825206746).

Almost surely, 2^28949074688 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 28949074688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29707442856).

28949074688 is an abundant number, since it is smaller than the sum of its proper divisors (30465811024).

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

28949074688 is a wasteful number, since it uses less digits than its factorization.

28949074688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557 (or 3543 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 65.

The spelling of 28949074688 in words is "twenty-eight billion, nine hundred forty-nine million, seventy-four thousand, six hundred eighty-eight".