22164744 has 32 divisors (see below), whose sum is σ = 63328320. Its totient is φ = 6332736.

The previous prime is 22164743. The next prime is 22164749. The reversal of 22164744 is 44746122.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22164743) 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, 65799 + ... + 66134.

It is an arithmetic number, because the mean of its divisors is an integer number (1979010).

Almost surely, 2^22164744 is an apocalyptic number.

22164744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22164744 is an abundant number, since it is smaller than the sum of its proper divisors (41163576).

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

22164744 is a wasteful number, since it uses less digits than its factorization.

22164744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131949 (or 131945 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 22164744 is about 4707.9447745274. The cubic root of 22164744 is about 280.9016174290.

The spelling of 22164744 in words is "twenty-two million, one hundred sixty-four thousand, seven hundred forty-four".