22113965 has 8 divisors (see below), whose sum is σ = 27184248. Its totient is φ = 17259520.

The previous prime is 22113961. The next prime is 22113977. The reversal of 22113965 is 56931122.

It can be written as a sum of positive squares in 4 ways, for example, as 3052009 + 19061956 = 1747^2 + 4366^2 .

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

It is not a de Polignac number, because 22113965 - 2² = 22113961 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 (22113961) 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, 53732 + ... + 54141.

It is an arithmetic number, because the mean of its divisors is an integer number (3398031).

Almost surely, 2^22113965 is an apocalyptic number.

It is an amenable number.

22113965 is a deficient number, since it is larger than the sum of its proper divisors (5070283).

22113965 is a wasteful number, since it uses less digits than its factorization.

22113965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107919.

The product of its digits is 3240, while the sum is 29.

The square root of 22113965 is about 4702.5487769932. The cubic root of 22113965 is about 280.6869400132.

The spelling of 22113965 in words is "twenty-two million, one hundred thirteen thousand, nine hundred sixty-five".