28327332 has 48 divisors (see below), whose sum is σ = 73204992. Its totient is φ = 8453280.

The previous prime is 28327307. The next prime is 28327337. The reversal of 28327332 is 23372382.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28327332.

It is not an unprimeable number, because it can be changed into a prime (28327337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7243 + ... + 10445.

It is an arithmetic number, because the mean of its divisors is an integer number (1525104).

Almost surely, 2^28327332 is an apocalyptic number.

28327332 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 28327332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36602496).

28327332 is an abundant number, since it is smaller than the sum of its proper divisors (44877660).

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

28327332 is a wasteful number, since it uses less digits than its factorization.

28327332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288 (or 3286 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

The square root of 28327332 is about 5322.3427172628. The cubic root of 28327332 is about 304.8376166882.

The spelling of 28327332 in words is "twenty-eight million, three hundred twenty-seven thousand, three hundred thirty-two".