28920057192 has 192 divisors, whose sum is σ = 85857408000. Its totient is φ = 8740753920.

The previous prime is 28920057157. The next prime is 28920057197. The reversal of 28920057192 is 29175002982.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28920057197) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14837434 + ... + 14839382.

It is an arithmetic number, because the mean of its divisors is an integer number (447174000).

Almost surely, 2^28920057192 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 28920057192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42928704000).

28920057192 is an abundant number, since it is smaller than the sum of its proper divisors (56937350808).

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

28920057192 is a wasteful number, since it uses less digits than its factorization.

28920057192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 28920057192 in words is "twenty-eight billion, nine hundred twenty million, fifty-seven thousand, one hundred ninety-two".