28798534788 has 24 divisors (see below), whose sum is σ = 67200647808. Its totient is φ = 9598930656.

The previous prime is 28798534757. The next prime is 28798534789. The reversal of 28798534788 is 88743589782.

It is not an unprimeable number, because it can be changed into a prime (28798534789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165045 + ... + 291267.

It is an arithmetic number, because the mean of its divisors is an integer number (2800026992).

Almost surely, 2^28798534788 is an apocalyptic number.

It is an amenable number.

28798534788 is an abundant number, since it is smaller than the sum of its proper divisors (38402113020).

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

28798534788 is a wasteful number, since it uses less digits than its factorization.

28798534788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145243 (or 145241 counting only the distinct ones).

The product of its digits is 216760320, while the sum is 69.

The spelling of 28798534788 in words is "twenty-eight billion, seven hundred ninety-eight million, five hundred thirty-four thousand, seven hundred eighty-eight".