28152576 has 72 divisors (see below), whose sum is σ = 83272560. Its totient is φ = 9381888.

The previous prime is 28152563. The next prime is 28152581. The reversal of 28152576 is 67525182.

It is a happy number.

28152576 is a `hidden beast` number, since 2 + 81 + 5 + 2 + 576 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a self number, because there is not a number n which added to its sum of digits gives 28152576.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4876 + ... + 8948.

Almost surely, 2^28152576 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 28152576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41636280).

28152576 is an abundant number, since it is smaller than the sum of its proper divisors (55119984).

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

28152576 is an equidigital number, since it uses as much as digits as its factorization.

28152576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098 (or 4078 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 28152576 is about 5305.9001121393. The cubic root of 28152576 is about 304.2094586028.

The spelling of 28152576 in words is "twenty-eight million, one hundred fifty-two thousand, five hundred seventy-six".