22166413 has 4 divisors (see below), whose sum is σ = 22478688. Its totient is φ = 21854140.

The previous prime is 22166383. The next prime is 22166447. The reversal of 22166413 is 31466122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31466122 = 2 ⋅15733061.

It is a cyclic number.

It is not a de Polignac number, because 22166413 - 2⁵ = 22166381 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 (22166813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156031 + ... + 156172.

It is an arithmetic number, because the mean of its divisors is an integer number (5619672).

Almost surely, 2^22166413 is an apocalyptic number.

It is an amenable number.

22166413 is a deficient number, since it is larger than the sum of its proper divisors (312275).

22166413 is an equidigital number, since it uses as much as digits as its factorization.

22166413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312274.

The product of its digits is 1728, while the sum is 25.

The square root of 22166413 is about 4708.1220247568. The cubic root of 22166413 is about 280.9086678606.

The spelling of 22166413 in words is "twenty-two million, one hundred sixty-six thousand, four hundred thirteen".