28368392 has 32 divisors (see below), whose sum is σ = 58688280. Its totient is φ = 12771840.

The previous prime is 28368343. The next prime is 28368419. The reversal of 28368392 is 29386382.

It can be written as a sum of positive squares in 4 ways, for example, as 4024036 + 24344356 = 2006^2 + 4934^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938 + ... + 7590.

Almost surely, 2^28368392 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 28368392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29344140).

28368392 is an abundant number, since it is smaller than the sum of its proper divisors (30319888).

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

28368392 is a wasteful number, since it uses less digits than its factorization.

28368392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6713 (or 6709 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 28368392 is about 5326.1986444368. The cubic root of 28368392 is about 304.9848312800.

The spelling of 28368392 in words is "twenty-eight million, three hundred sixty-eight thousand, three hundred ninety-two".