28253592 has 96 divisors (see below), whose sum is σ = 83144880. Its totient is φ = 8632320.

The previous prime is 28253587. The next prime is 28253593. The reversal of 28253592 is 29535282.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28253593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49903 + ... + 50465.

Almost surely, 2^28253592 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 28253592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41572440).

28253592 is an abundant number, since it is smaller than the sum of its proper divisors (54891288).

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

28253592 is a wasteful number, since it uses less digits than its factorization.

28253592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 626 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 28253592 is about 5315.4108025627. The cubic root of 28253592 is about 304.5728752105.

The spelling of 28253592 in words is "twenty-eight million, two hundred fifty-three thousand, five hundred ninety-two".