22032270 has 64 divisors (see below), whose sum is σ = 63282240. Its totient is φ = 5422464.

The previous prime is 22032253. The next prime is 22032271. The reversal of 22032270 is 7223022.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22032271) 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, 372 + ... + 6648.

It is an arithmetic number, because the mean of its divisors is an integer number (988785).

Almost surely, 2^22032270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22032270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31641120).

22032270 is an abundant number, since it is smaller than the sum of its proper divisors (41249970).

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

22032270 is a wasteful number, since it uses less digits than its factorization.

22032270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6306 (or 6300 counting only the distinct ones).

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

The square root of 22032270 is about 4693.8544928449. The cubic root of 22032270 is about 280.3408688752.

Adding to 22032270 its reverse (7223022), we get a palindrome (29255292).

The spelling of 22032270 in words is "twenty-two million, thirty-two thousand, two hundred seventy".