22440275 has 24 divisors (see below), whose sum is σ = 32695824. Its totient is φ = 15062400.

The previous prime is 22440269. The next prime is 22440277. The reversal of 22440275 is 57204422.

It is not a de Polignac number, because 22440275 - 2⁴ = 22440259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22440277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 437 + ... + 6713.

It is an arithmetic number, because the mean of its divisors is an integer number (1362326).

Almost surely, 2^22440275 is an apocalyptic number.

22440275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22440275 is a deficient number, since it is larger than the sum of its proper divisors (10255549).

22440275 is a wasteful number, since it uses less digits than its factorization.

22440275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311 (or 6306 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 22440275 is about 4737.1167391146. The cubic root of 22440275 is about 282.0607945315.

Adding to 22440275 its reverse (57204422), we get a palindrome (79644697).

The spelling of 22440275 in words is "twenty-two million, four hundred forty thousand, two hundred seventy-five".