28327392 has 72 divisors (see below), whose sum is σ = 82555200. Its totient is φ = 9208320.

The previous prime is 28327391. The next prime is 28327393. The reversal of 28327392 is 29372382.

It is an interprime number because it is at equal distance from previous prime (28327391) and next prime (28327393).

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×28327392² = 1604882275043328, which contains 22 as substring.

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 (28327391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10609 + ... + 13007.

It is an arithmetic number, because the mean of its divisors is an integer number (1146600).

Almost surely, 2^28327392 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 28327392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41277600).

28327392 is an abundant number, since it is smaller than the sum of its proper divisors (54227808).

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

28327392 is a wasteful number, since it uses less digits than its factorization.

28327392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456 (or 2445 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 28327392 is about 5322.3483538754. The cubic root of 28327392 is about 304.8378319131.

The spelling of 28327392 in words is "twenty-eight million, three hundred twenty-seven thousand, three hundred ninety-two".