28281616032 has 24 divisors (see below), whose sum is σ = 74239242336. Its totient is φ = 9427205312.

The previous prime is 28281616019. The next prime is 28281616039. The reversal of 28281616032 is 23061618282.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (28281616039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147299988 + ... + 147300179.

It is an arithmetic number, because the mean of its divisors is an integer number (3093301764).

Almost surely, 2^28281616032 is an apocalyptic number.

It is an amenable number.

28281616032 is an abundant number, since it is smaller than the sum of its proper divisors (45957626304).

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

28281616032 is a wasteful number, since it uses less digits than its factorization.

28281616032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294600180 (or 294600172 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 28281616032 in words is "twenty-eight billion, two hundred eighty-one million, six hundred sixteen thousand, thirty-two".