22642227 has 8 divisors (see below), whose sum is σ = 33544080. Its totient is φ = 15094800.

The previous prime is 22642211. The next prime is 22642229. The reversal of 22642227 is 72224622.

It is not a de Polignac number, because 22642227 - 2⁴ = 22642211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 838601 = 22642227 / (2 + 2 + 6 + 4 + 2 + 2 + 2 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 22642227.

It is not an unprimeable number, because it can be changed into a prime (22642229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419274 + ... + 419327.

It is an arithmetic number, because the mean of its divisors is an integer number (4193010).

Almost surely, 2^22642227 is an apocalyptic number.

22642227 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22642227 is a deficient number, since it is larger than the sum of its proper divisors (10901853).

22642227 is an equidigital number, since it uses as much as digits as its factorization.

22642227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838610 (or 838604 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 22642227 is about 4758.3849150736. The cubic root of 22642227 is about 282.9044073583.

Adding to 22642227 its reverse (72224622), we get a palindrome (94866849).

The spelling of 22642227 in words is "twenty-two million, six hundred forty-two thousand, two hundred twenty-seven".