22156673 has 36 divisors (see below), whose sum is σ = 29383956. Its totient is φ = 16632000.

The previous prime is 22156663. The next prime is 22156681. The reversal of 22156673 is 37665122.

It can be written as a sum of positive squares in 2 ways, for example, as 20638849 + 1517824 = 4543^2 + 1232^2 .

It is not a de Polignac number, because 22156673 - 2¹⁰ = 22155649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22156663) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 219323 + ... + 219423.

It is an arithmetic number, because the mean of its divisors is an integer number (816221).

Almost surely, 2^22156673 is an apocalyptic number.

It is an amenable number.

22156673 is a deficient number, since it is larger than the sum of its proper divisors (7227283).

22156673 is a wasteful number, since it uses less digits than its factorization.

22156673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 156 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 22156673 is about 4707.0875283980. The cubic root of 22156673 is about 280.8675177466.

It can be divided in two parts, 2215 and 6673, that added together give a palindrome (8888).

The spelling of 22156673 in words is "twenty-two million, one hundred fifty-six thousand, six hundred seventy-three".