28997659152 has 400 divisors, whose sum is σ = 110798658432. Its totient is φ = 7088394240.

The previous prime is 28997659109. The next prime is 28997659213. The reversal of 28997659152 is 25195679982.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 28997659152.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1687918 + ... + 1705010.

Almost surely, 2^28997659152 is an apocalyptic number.

28997659152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28997659152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55399329216).

28997659152 is an abundant number, since it is smaller than the sum of its proper divisors (81800999280).

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

28997659152 is a wasteful number, since it uses less digits than its factorization.

28997659152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17148 (or 17133 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 63.

The spelling of 28997659152 in words is "twenty-eight billion, nine hundred ninety-seven million, six hundred fifty-nine thousand, one hundred fifty-two".