22775000 has 48 divisors (see below), whose sum is σ = 53434080. Its totient is φ = 9100000.

The previous prime is 22774981. The next prime is 22775009. The reversal of 22775000 is 57722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22775009) 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, 24545 + ... + 25455.

It is an arithmetic number, because the mean of its divisors is an integer number (1113210).

Almost surely, 2^22775000 is an apocalyptic number.

22775000 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 22775000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26717040).

22775000 is an abundant number, since it is smaller than the sum of its proper divisors (30659080).

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

22775000 is an frugal number, since it uses more digits than its factorization.

22775000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 22775000 is about 4772.3159995960. The cubic root of 22775000 is about 283.4563095538.

The spelling of 22775000 in words is "twenty-two million, seven hundred seventy-five thousand".