22400245 has 8 divisors (see below), whose sum is σ = 30720384. Its totient is φ = 15360144.

The previous prime is 22400243. The next prime is 22400249. The reversal of 22400245 is 54200422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22400245 - 2¹ = 22400243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400243) 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, 319969 + ... + 320038.

It is an arithmetic number, because the mean of its divisors is an integer number (3840048).

Almost surely, 2^22400245 is an apocalyptic number.

It is an amenable number.

22400245 is a deficient number, since it is larger than the sum of its proper divisors (8320139).

22400245 is an equidigital number, since it uses as much as digits as its factorization.

22400245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640019.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22400245 is about 4732.8897092580. The cubic root of 22400245 is about 281.8929770099.

Adding to 22400245 its reverse (54200422), we get a palindrome (76600667).

The spelling of 22400245 in words is "twenty-two million, four hundred thousand, two hundred forty-five".