28791792432 has 120 divisors (see below), whose sum is σ = 86950622304. Its totient is φ = 8841111552.

The previous prime is 28791792409. The next prime is 28791792437. The reversal of 28791792432 is 23429719782.

It is a happy number.

It is a super-2 number, since 2×28791792432² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28791792437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 926328 + ... + 956904.

Almost surely, 2^28791792432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28791792432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43475311152).

28791792432 is an abundant number, since it is smaller than the sum of its proper divisors (58158829872).

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

28791792432 is a wasteful number, since it uses less digits than its factorization.

28791792432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31107 (or 31098 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 28791792432 in words is "twenty-eight billion, seven hundred ninety-one million, seven hundred ninety-two thousand, four hundred thirty-two".