28822392 has 80 divisors (see below), whose sum is σ = 85014600. Its totient is φ = 9097920.

The previous prime is 28822369. The next prime is 28822397. The reversal of 28822392 is 29322882.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28822397) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11142 + ... + 13482.

Almost surely, 2^28822392 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 28822392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42507300).

28822392 is an abundant number, since it is smaller than the sum of its proper divisors (56192208).

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

28822392 is a wasteful number, since it uses less digits than its factorization.

28822392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378 (or 2365 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 28822392 is about 5368.6489920649. The cubic root of 28822392 is about 306.6031931224.

The spelling of 28822392 in words is "twenty-eight million, eight hundred twenty-two thousand, three hundred ninety-two".