22203945 has 24 divisors (see below), whose sum is σ = 38597832. Its totient is φ = 11808000.

The previous prime is 22203943. The next prime is 22203949. The reversal of 22203945 is 54930222.

It can be written as a sum of positive squares in 4 ways, for example, as 3229209 + 18974736 = 1797^2 + 4356^2 .

It is not a de Polignac number, because 22203945 - 2¹ = 22203943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22203943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26635 + ... + 27455.

It is an arithmetic number, because the mean of its divisors is an integer number (1608243).

Almost surely, 2^22203945 is an apocalyptic number.

It is an amenable number.

22203945 is a deficient number, since it is larger than the sum of its proper divisors (16393887).

22203945 is a wasteful number, since it uses less digits than its factorization.

22203945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 22203945 is about 4712.1062169692. The cubic root of 22203945 is about 281.0671225947.

The spelling of 22203945 in words is "twenty-two million, two hundred three thousand, nine hundred forty-five".