28761447616 has 28 divisors (see below), whose sum is σ = 62261998920. Its totient is φ = 13073384960.

The previous prime is 28761447599. The next prime is 28761447641. The reversal of 28761447616 is 61674416782.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20426461 + ... + 20427868.

Almost surely, 2^28761447616 is an apocalyptic number.

It is an amenable number.

28761447616 is an abundant number, since it is smaller than the sum of its proper divisors (33500551304).

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

28761447616 is a wasteful number, since it uses less digits than its factorization.

28761447616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40854352 (or 40854342 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 52.

The spelling of 28761447616 in words is "twenty-eight billion, seven hundred sixty-one million, four hundred forty-seven thousand, six hundred sixteen".