28245276 has 36 divisors (see below), whose sum is σ = 71560944. Its totient is φ = 9393600.

The previous prime is 28245263. The next prime is 28245289. The reversal of 28245276 is 67254282.

It is an interprime number because it is at equal distance from previous prime (28245263) and next prime (28245289).

It is a tau number, because it is divible by the number of its divisors (36).

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 28245276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26881 + ... + 27911.

It is an arithmetic number, because the mean of its divisors is an integer number (1987804).

Almost surely, 2^28245276 is an apocalyptic number.

It is an amenable number.

28245276 is an abundant number, since it is smaller than the sum of its proper divisors (43315668).

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

28245276 is a wasteful number, since it uses less digits than its factorization.

28245276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1797 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 28245276 is about 5314.6284912494. The cubic root of 28245276 is about 304.5429902013.

It can be divided in two parts, 2824 and 5276, that added together give a square (8100 = 90²).

The spelling of 28245276 in words is "twenty-eight million, two hundred forty-five thousand, two hundred seventy-six".