22275000 has 240 divisors, whose sum is σ = 85072680. Its totient is φ = 5400000.

The previous prime is 22274977. The next prime is 22275031. The reversal of 22275000 is 57222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2024995 + ... + 2025005.

Almost surely, 2^22275000 is an apocalyptic number.

22275000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22275000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42536340).

22275000 is an abundant number, since it is smaller than the sum of its proper divisors (62797680).

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

22275000 is an equidigital number, since it uses as much as digits as its factorization.

22275000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 22275000 is about 4719.6398167657. The cubic root of 22275000 is about 281.3666183050.

It can be divided in two parts, 2227 and 5000, that added together give a palindrome (7227).

The spelling of 22275000 in words is "twenty-two million, two hundred seventy-five thousand".