28568232 has 96 divisors (see below), whose sum is σ = 96482880. Its totient is φ = 7418880.

The previous prime is 28568227. The next prime is 28568237. The reversal of 28568232 is 23286582.

It is an interprime number because it is at equal distance from previous prime (28568227) and next prime (28568237).

It is a super-2 number, since 2×28568232² = 1632287759211648, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (28568237) 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, 2968 + ... + 8120.

It is an arithmetic number, because the mean of its divisors is an integer number (1005030).

Almost surely, 2^28568232 is an apocalyptic number.

28568232 is a gapful number since it is divisible by the number (22) 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 28568232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48241440).

28568232 is an abundant number, since it is smaller than the sum of its proper divisors (67914648).

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

28568232 is a wasteful number, since it uses less digits than its factorization.

28568232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183 (or 5176 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28568232 is about 5344.9258180072. The cubic root of 28568232 is about 305.6993073363.

The spelling of 28568232 in words is "twenty-eight million, five hundred sixty-eight thousand, two hundred thirty-two".