28396338432 has 576 divisors, whose sum is σ = 100466688000. Its totient is φ = 6897623040.

The previous prime is 28396338419. The next prime is 28396338437. The reversal of 28396338432 is 23483369382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28396338437) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142695069 + ... + 142695267.

Almost surely, 2^28396338432 is an apocalyptic number.

28396338432 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 28396338432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50233344000).

28396338432 is an abundant number, since it is smaller than the sum of its proper divisors (72070349568).

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

28396338432 is a wasteful number, since it uses less digits than its factorization.

28396338432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 368 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 51.

The spelling of 28396338432 in words is "twenty-eight billion, three hundred ninety-six million, three hundred thirty-eight thousand, four hundred thirty-two".