28567260 has 72 divisors (see below), whose sum is σ = 91225680. Its totient is φ = 7216128.

The previous prime is 28567247. The next prime is 28567267. The reversal of 28567260 is 6276582.

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 (28567267) 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, 757 + ... + 7596.

Almost surely, 2^28567260 is an apocalyptic number.

28567260 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 28567260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45612840).

28567260 is an abundant number, since it is smaller than the sum of its proper divisors (62658420).

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

28567260 is a wasteful number, since it uses less digits than its factorization.

28567260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8387 (or 8382 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 28567260 is about 5344.8348898727. The cubic root of 28567260 is about 305.6958402790.

The spelling of 28567260 in words is "twenty-eight million, five hundred sixty-seven thousand, two hundred sixty".