22281370 has 8 divisors (see below), whose sum is σ = 40106484. Its totient is φ = 8912544.

The previous prime is 22281361. The next prime is 22281377. The reversal of 22281370 is 7318222.

It can be written as a sum of positive squares in 2 ways, for example, as 19900521 + 2380849 = 4461^2 + 1543^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22281377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114059 + ... + 1114078.

Almost surely, 2^22281370 is an apocalyptic number.

22281370 is a deficient number, since it is larger than the sum of its proper divisors (17825114).

22281370 is a wasteful number, since it uses less digits than its factorization.

22281370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228144.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 22281370 is about 4720.3146081591. The cubic root of 22281370 is about 281.3934366296.

Adding to 22281370 its reverse (7318222), we get a palindrome (29599592).

The spelling of 22281370 in words is "twenty-two million, two hundred eighty-one thousand, three hundred seventy".