22213230 has 32 divisors (see below), whose sum is σ = 57413664. Its totient is φ = 5467776.

The previous prime is 22213183. The next prime is 22213259. The reversal of 22213230 is 3231222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28089 + ... + 28868.

It is an arithmetic number, because the mean of its divisors is an integer number (1794177).

Almost surely, 2^22213230 is an apocalyptic number.

22213230 is an abundant number, since it is smaller than the sum of its proper divisors (35200434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22213230 is a wasteful number, since it uses less digits than its factorization.

22213230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56980.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 22213230 is about 4713.0913422084. The cubic root of 22213230 is about 281.1062949813.

Adding to 22213230 its reverse (3231222), we get a palindrome (25444452).

The spelling of 22213230 in words is "twenty-two million, two hundred thirteen thousand, two hundred thirty".