22188073 has 2 divisors, whose sum is σ = 22188074. Its totient is φ = 22188072.

The previous prime is 22188053. The next prime is 22188097. The reversal of 22188073 is 37088122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11377129 + 10810944 = 3373^2 + 3288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22188073 is a prime.

It is not a weakly prime, because it can be changed into another prime (22188053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11094036 + 11094037.

It is an arithmetic number, because the mean of its divisors is an integer number (11094037).

Almost surely, 2^22188073 is an apocalyptic number.

It is an amenable number.

22188073 is a deficient number, since it is larger than the sum of its proper divisors (1).

22188073 is an equidigital number, since it uses as much as digits as its factorization.

22188073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 22188073 is about 4710.4217433262. The cubic root of 22188073 is about 281.0001350877. Note that the first 3 decimals are identical.

The spelling of 22188073 in words is "twenty-two million, one hundred eighty-eight thousand, seventy-three".