28265120 has 96 divisors (see below), whose sum is σ = 73156608. Its totient is φ = 10257408.

The previous prime is 28265093. The next prime is 28265177. The reversal of 28265120 is 2156282.

It is a super-2 number, since 2×28265120² = 1597834017228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 28265120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222497 + ... + 222623.

It is an arithmetic number, because the mean of its divisors is an integer number (762048).

Almost surely, 2^28265120 is an apocalyptic number.

28265120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28265120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36578304).

28265120 is an abundant number, since it is smaller than the sum of its proper divisors (44891488).

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

28265120 is a wasteful number, since it uses less digits than its factorization.

28265120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 28265120 is about 5316.4950860506. The cubic root of 28265120 is about 304.6142934094.

The spelling of 28265120 in words is "twenty-eight million, two hundred sixty-five thousand, one hundred twenty".