28452274164 has 144 divisors (see below), whose sum is σ = 76033216896. Its totient is φ = 9300873600.

The previous prime is 28452274157. The next prime is 28452274229. The reversal of 28452274164 is 46147225482.

28452274164 is a `hidden beast` number, since 2 + 8 + 4 + 5 + 227 + 416 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32076529 + ... + 32077415.

Almost surely, 2^28452274164 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 28452274164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38016608448).

28452274164 is an abundant number, since it is smaller than the sum of its proper divisors (47580942732).

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

28452274164 is a wasteful number, since it uses less digits than its factorization.

28452274164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1494 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The spelling of 28452274164 in words is "twenty-eight billion, four hundred fifty-two million, two hundred seventy-four thousand, one hundred sixty-four".