22166743 has 4 divisors (see below), whose sum is σ = 22183120. Its totient is φ = 22150368.

The previous prime is 22166741. The next prime is 22166789. The reversal of 22166743 is 34766122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22166743 - 2¹ = 22166741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22166741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5955 + ... + 8932.

It is an arithmetic number, because the mean of its divisors is an integer number (5545780).

Almost surely, 2^22166743 is an apocalyptic number.

22166743 is the 2978-th heptagonal number.

22166743 is a deficient number, since it is larger than the sum of its proper divisors (16377).

22166743 is a wasteful number, since it uses less digits than its factorization.

22166743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16376.

The product of its digits is 12096, while the sum is 31.

The square root of 22166743 is about 4708.1570704470. The cubic root of 22166743 is about 280.9100618525.

The spelling of 22166743 in words is "twenty-two million, one hundred sixty-six thousand, seven hundred forty-three".