28921052160 has 2112 divisors, whose sum is σ = 146362137600. Its totient is φ = 5255331840.

The previous prime is 28921052159. The next prime is 28921052213. The reversal of 28921052160 is 6125012982.

28921052160 is a `hidden beast` number, since 289 + 210 + 5 + 2 + 160 = 666.

It is a tau number, because it is divible by the number of its divisors (2112).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1522160631 + ... + 1522160649.

Almost surely, 2^28921052160 is an apocalyptic number.

28921052160 is a gapful number since it is divisible by the number (20) 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 28921052160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73181068800).

28921052160 is an abundant number, since it is smaller than the sum of its proper divisors (117441085440).

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

28921052160 is a wasteful number, since it uses less digits than its factorization.

28921052160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 28921052160 in words is "twenty-eight billion, nine hundred twenty-one million, fifty-two thousand, one hundred sixty".