22042015 has 16 divisors (see below), whose sum is σ = 27279648. Its totient is φ = 17087616.

The previous prime is 22042003. The next prime is 22042019. The reversal of 22042015 is 51024022.

It is a cyclic number.

It is not a de Polignac number, because 22042015 - 2⁵ = 22041983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22042015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22042019) 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 15 ways as a sum of consecutive naturals, for example, 33429 + ... + 34081.

It is an arithmetic number, because the mean of its divisors is an integer number (1704978).

Almost surely, 2^22042015 is an apocalyptic number.

22042015 is a deficient number, since it is larger than the sum of its proper divisors (5237633).

22042015 is a wasteful number, since it uses less digits than its factorization.

22042015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22042015 is about 4694.8924375325. The cubic root of 22042015 is about 280.3821949103.

Adding to 22042015 its reverse (51024022), we get a palindrome (73066037).

The spelling of 22042015 in words is "twenty-two million, forty-two thousand, fifteen".