22436220 has 24 divisors (see below), whose sum is σ = 62821584. Its totient is φ = 5982976.

The previous prime is 22436203. The next prime is 22436231. The reversal of 22436220 is 2263422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186909 + ... + 187028.

It is an arithmetic number, because the mean of its divisors is an integer number (2617566).

Almost surely, 2^22436220 is an apocalyptic number.

22436220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22436220 is an abundant number, since it is smaller than the sum of its proper divisors (40385364).

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

22436220 is a wasteful number, since it uses less digits than its factorization.

22436220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373949 (or 373947 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 22436220 is about 4736.6887168147. The cubic root of 22436220 is about 282.0438038690.

Adding to 22436220 its reverse (2263422), we get a palindrome (24699642).

The spelling of 22436220 in words is "twenty-two million, four hundred thirty-six thousand, two hundred twenty".