22203040 has 48 divisors (see below), whose sum is σ = 52859520. Its totient is φ = 8812800.

The previous prime is 22203011. The next prime is 22203043. The reversal of 22203040 is 4030222.

22203040 is nontrivially palindromic in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 22203040.

It is not an unprimeable number, because it can be changed into a prime (22203043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23701 + ... + 24619.

It is an arithmetic number, because the mean of its divisors is an integer number (1101240).

Almost surely, 2^22203040 is an apocalyptic number.

22203040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22203040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26429760).

22203040 is an abundant number, since it is smaller than the sum of its proper divisors (30656480).

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

22203040 is a wasteful number, since it uses less digits than its factorization.

22203040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 22203040 is about 4712.0101867462. The cubic root of 22203040 is about 281.0633039159.

Subtracting from 22203040 its product of nonzero digits (96), we obtain a square (22202944 = 4712²).

Adding to 22203040 its reverse (4030222), we get a palindrome (26233262).

The spelling of 22203040 in words is "twenty-two million, two hundred three thousand, forty".