28362288 has 80 divisors (see below), whose sum is σ = 78030720. Its totient is φ = 8851968.

The previous prime is 28362277. The next prime is 28362293. The reversal of 28362288 is 88226382.

It is a nude number because it is divisible by every one of its digits.

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, 124831 + ... + 125057.

It is an arithmetic number, because the mean of its divisors is an integer number (975384).

Almost surely, 2^28362288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28362288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39015360).

28362288 is an abundant number, since it is smaller than the sum of its proper divisors (49668432).

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

28362288 is a wasteful number, since it uses less digits than its factorization.

28362288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 388 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 28362288 is about 5325.6255970543. The cubic root of 28362288 is about 304.9629552786.

The spelling of 28362288 in words is "twenty-eight million, three hundred sixty-two thousand, two hundred eighty-eight".