22228949 has 8 divisors (see below), whose sum is σ = 22686048. Its totient is φ = 21774960.

The previous prime is 22228939. The next prime is 22228951. The reversal of 22228949 is 94982222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22228949 - 2⁸ = 22228693 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 (22228919) 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, 18134 + ... + 19320.

It is an arithmetic number, because the mean of its divisors is an integer number (2835756).

Almost surely, 2^22228949 is an apocalyptic number.

It is an amenable number.

22228949 is a deficient number, since it is larger than the sum of its proper divisors (457099).

22228949 is a wasteful number, since it uses less digits than its factorization.

22228949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555.

The product of its digits is 41472, while the sum is 38.

The square root of 22228949 is about 4714.7586364521. The cubic root of 22228949 is about 281.1725868259.

The spelling of 22228949 in words is "twenty-two million, two hundred twenty-eight thousand, nine hundred forty-nine".