28522608 has 60 divisors (see below), whose sum is σ = 75564360. Its totient is φ = 9270656.

The previous prime is 28522607. The next prime is 28522609. The reversal of 28522608 is 80622582.

It is an interprime number because it is at equal distance from previous prime (28522607) and next prime (28522609).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28522607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105898 + ... + 106166.

It is an arithmetic number, because the mean of its divisors is an integer number (1259406).

Almost surely, 2^28522608 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 28522608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37782180).

28522608 is an abundant number, since it is smaller than the sum of its proper divisors (47041752).

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

28522608 is a wasteful number, since it uses less digits than its factorization.

28522608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 28522608 is about 5340.6561394645. The cubic root of 28522608 is about 305.5364847944.

It can be divided in two parts, 2852 and 2608, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 28522608 in words is "twenty-eight million, five hundred twenty-two thousand, six hundred eight".