28922200 has 24 divisors (see below), whose sum is σ = 67244580. Its totient is φ = 11568800.

The previous prime is 28922191. The next prime is 28922203. The reversal of 28922200 is 222982.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28922203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72106 + ... + 72505.

Almost surely, 2^28922200 is an apocalyptic number.

28922200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28922200 is an abundant number, since it is smaller than the sum of its proper divisors (38322380).

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

28922200 is a wasteful number, since it uses less digits than its factorization.

28922200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144627 (or 144618 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 28922200 is about 5377.9364072105. The cubic root of 28922200 is about 306.9566936972.

The spelling of 28922200 in words is "twenty-eight million, nine hundred twenty-two thousand, two hundred".