28245528 has 24 divisors (see below), whose sum is σ = 76498500. Its totient is φ = 9415152.

The previous prime is 28245521. The next prime is 28245563. The reversal of 28245528 is 82554282.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 28245492 and 28245501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28245521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196078 + ... + 196221.

Almost surely, 2^28245528 is an apocalyptic number.

It is an amenable number.

28245528 is an abundant number, since it is smaller than the sum of its proper divisors (48252972).

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

28245528 is a wasteful number, since it uses less digits than its factorization.

28245528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392311 (or 392304 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The square root of 28245528 is about 5314.6521993448. The cubic root of 28245528 is about 304.5438958938.

The spelling of 28245528 in words is "twenty-eight million, two hundred forty-five thousand, five hundred twenty-eight".