22149773 has 4 divisors (see below), whose sum is σ = 22664928. Its totient is φ = 21634620.

The previous prime is 22149769. The next prime is 22149797. The reversal of 22149773 is 37794122.

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.

It is a cyclic number.

It is not a de Polignac number, because 22149773 - 2² = 22149769 is a prime.

It is a super-2 number, since 2×22149773² = 981224887903058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22149073) 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, 257513 + ... + 257598.

It is an arithmetic number, because the mean of its divisors is an integer number (5666232).

Almost surely, 2^22149773 is an apocalyptic number.

It is an amenable number.

22149773 is a deficient number, since it is larger than the sum of its proper divisors (515155).

22149773 is an equidigital number, since it uses as much as digits as its factorization.

22149773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515154.

The product of its digits is 21168, while the sum is 35.

The square root of 22149773 is about 4706.3545340316. The cubic root of 22149773 is about 280.8383589302.

It can be divided in two parts, 22149 and 773, that added together give a palindrome (22922).

The spelling of 22149773 in words is "twenty-two million, one hundred forty-nine thousand, seven hundred seventy-three".