28998964784 has 20 divisors (see below), whose sum is σ = 57555873480. Its totient is φ = 14145836160.

The previous prime is 28998964783. The next prime is 28998964807. The reversal of 28998964784 is 48746989982.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28998964781) 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, 22102214 + ... + 22103525.

It is an arithmetic number, because the mean of its divisors is an integer number (2877793674).

Almost surely, 2^28998964784 is an apocalyptic number.

It is an amenable number.

28998964784 is a deficient number, since it is larger than the sum of its proper divisors (28556908696).

28998964784 is a wasteful number, since it uses less digits than its factorization.

28998964784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44205788 (or 44205782 counting only the distinct ones).

The product of its digits is 501645312, while the sum is 74.

The spelling of 28998964784 in words is "twenty-eight billion, nine hundred ninety-eight million, nine hundred sixty-four thousand, seven hundred eighty-four".