22203072 has 70 divisors (see below), whose sum is σ = 65832228. Its totient is φ = 7399296.

The previous prime is 22203061. The next prime is 22203079. The reversal of 22203072 is 27030222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22203079) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3043 + ... + 7325.

Almost surely, 2^22203072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22203072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32916114).

22203072 is an abundant number, since it is smaller than the sum of its proper divisors (43629156).

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

22203072 is an equidigital number, since it uses as much as digits as its factorization.

22203072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307 (or 4288 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 22203072 is about 4712.0135823234. The cubic root of 22203072 is about 281.0634389428.

Adding to 22203072 its reverse (27030222), we get a palindrome (49233294).

The spelling of 22203072 in words is "twenty-two million, two hundred three thousand, seventy-two".