22819965 has 16 divisors (see below), whose sum is σ = 41728128. Its totient is φ = 10431936.

The previous prime is 22819963. The next prime is 22819981. The reversal of 22819965 is 56991822.

It is not a de Polignac number, because 22819965 - 2¹ = 22819963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22819963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108562 + ... + 108771.

It is an arithmetic number, because the mean of its divisors is an integer number (2608008).

Almost surely, 2^22819965 is an apocalyptic number.

It is an amenable number.

22819965 is a deficient number, since it is larger than the sum of its proper divisors (18908163).

22819965 is a wasteful number, since it uses less digits than its factorization.

22819965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217348.

The product of its digits is 77760, while the sum is 42.

The square root of 22819965 is about 4777.0247016318. The cubic root of 22819965 is about 283.6427308374.

It can be divided in two parts, 2281 and 9965, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 22819965 in words is "twenty-two million, eight hundred nineteen thousand, nine hundred sixty-five".