28229290432 has 504 divisors, whose sum is σ = 77633931600. Its totient is φ = 10079354880.

The previous prime is 28229290387. The next prime is 28229290487. The reversal of 28229290432 is 23409292282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 910622257 + ... + 910622287.

Almost surely, 2^28229290432 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 28229290432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38816965800).

28229290432 is an abundant number, since it is smaller than the sum of its proper divisors (49404641168).

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

28229290432 is a wasteful number, since it uses less digits than its factorization.

28229290432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 28229290432 in words is "twenty-eight billion, two hundred twenty-nine million, two hundred ninety thousand, four hundred thirty-two".