22208229 has 32 divisors (see below), whose sum is σ = 34473600. Its totient is φ = 14112000.

The previous prime is 22208213. The next prime is 22208267. The reversal of 22208229 is 92280222.

It is not a de Polignac number, because 22208229 - 2⁴ = 22208213 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22208269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88354 + ... + 88604.

It is an arithmetic number, because the mean of its divisors is an integer number (1077300).

Almost surely, 2^22208229 is an apocalyptic number.

22208229 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22208229 is a deficient number, since it is larger than the sum of its proper divisors (12265371).

22208229 is a wasteful number, since it uses less digits than its factorization.

22208229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22208229 is about 4712.5607688390. The cubic root of 22208229 is about 281.0851976729.

It can be divided in two parts, 222082 and 29, that added together give a triangular number (222111 = T₆₆₆).

The spelling of 22208229 in words is "twenty-two million, two hundred eight thousand, two hundred twenty-nine".