22268749 has 4 divisors (see below), whose sum is σ = 22284064. Its totient is φ = 22253436.

The previous prime is 22268731. The next prime is 22268767. The reversal of 22268749 is 94786222.

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 an interprime number because it is at equal distance from previous prime (22268731) and next prime (22268767).

It is a cyclic number.

It is not a de Polignac number, because 22268749 - 2⁹ = 22268237 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 (22268789) 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, 5217 + ... + 8470.

It is an arithmetic number, because the mean of its divisors is an integer number (5571016).

Almost surely, 2^22268749 is an apocalyptic number.

It is an amenable number.

22268749 is a deficient number, since it is larger than the sum of its proper divisors (15315).

22268749 is a wasteful number, since it uses less digits than its factorization.

22268749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15314.

The product of its digits is 96768, while the sum is 40.

The square root of 22268749 is about 4718.9775375604. The cubic root of 22268749 is about 281.3402960113.

The spelling of 22268749 in words is "twenty-two million, two hundred sixty-eight thousand, seven hundred forty-nine".