22081465 has 8 divisors (see below), whose sum is σ = 30283200. Its totient is φ = 15141552.

The previous prime is 22081459. The next prime is 22081469. The reversal of 22081465 is 56418022.

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 22081465 - 2¹⁷ = 21950393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22081469) 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, 315415 + ... + 315484.

It is an arithmetic number, because the mean of its divisors is an integer number (3785400).

Almost surely, 2^22081465 is an apocalyptic number.

It is an amenable number.

22081465 is a deficient number, since it is larger than the sum of its proper divisors (8201735).

22081465 is an equidigital number, since it uses as much as digits as its factorization.

22081465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630911.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22081465 is about 4699.0919335548. The cubic root of 22081465 is about 280.5493678485.

Adding to 22081465 its reverse (56418022), we get a palindrome (78499487).

It can be divided in two parts, 2208146 and 5, that added together give a triangular number (2208151 = T₂₁₀₁).

The spelling of 22081465 in words is "twenty-two million, eighty-one thousand, four hundred sixty-five".