22255770 has 16 divisors (see below), whose sum is σ = 53413920. Its totient is φ = 5934864.

The previous prime is 22255763. The next prime is 22255781. The reversal of 22255770 is 7755222.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 741859 = 22255770 / (2 + 2 + 2 + 5 + 5 + 7 + 7 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370900 + ... + 370959.

It is an arithmetic number, because the mean of its divisors is an integer number (3338370).

Almost surely, 2^22255770 is an apocalyptic number.

22255770 is an abundant number, since it is smaller than the sum of its proper divisors (31158150).

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

22255770 is a wasteful number, since it uses less digits than its factorization.

22255770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741869.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 22255770 is about 4717.6021451581. The cubic root of 22255770 is about 281.2856270917.

The spelling of 22255770 in words is "twenty-two million, two hundred fifty-five thousand, seven hundred seventy".