22152865 has 8 divisors (see below), whose sum is σ = 30381120. Its totient is φ = 15190512.

The previous prime is 22152863. The next prime is 22152881. The reversal of 22152865 is 56825122.

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 22152865 - 2¹ = 22152863 is a prime.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (22152863) 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, 316435 + ... + 316504.

It is an arithmetic number, because the mean of its divisors is an integer number (3797640).

Almost surely, 2^22152865 is an apocalyptic number.

It is an amenable number.

22152865 is a deficient number, since it is larger than the sum of its proper divisors (8228255).

22152865 is an equidigital number, since it uses as much as digits as its factorization.

22152865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632951.

The product of its digits is 9600, while the sum is 31.

The square root of 22152865 is about 4706.6830146081. The cubic root of 22152865 is about 280.8514262094.

Adding to 22152865 its reverse (56825122), we get a palindrome (78977987).

The spelling of 22152865 in words is "twenty-two million, one hundred fifty-two thousand, eight hundred sixty-five".