28967279616 has 528 divisors, whose sum is σ = 99784863360. Its totient is φ = 8301035520.

The previous prime is 28967279609. The next prime is 28967279617. The reversal of 28967279616 is 61697276982.

28967279616 is a `hidden beast` number, since 2 + 8 + 9 + 6 + 7 + 2 + 7 + 9 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (528).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28967279617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52005610 + ... + 52006166.

Almost surely, 2^28967279616 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 28967279616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49892431680).

28967279616 is an abundant number, since it is smaller than the sum of its proper divisors (70817583744).

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

28967279616 is a wasteful number, since it uses less digits than its factorization.

28967279616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 592 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The spelling of 28967279616 in words is "twenty-eight billion, nine hundred sixty-seven million, two hundred seventy-nine thousand, six hundred sixteen".