22729965 has 16 divisors (see below), whose sum is σ = 36808128. Its totient is φ = 11975936.

The previous prime is 22729963. The next prime is 22729981. The reversal of 22729965 is 56992722.

It is a cyclic number.

It is not a de Polignac number, because 22729965 - 2¹ = 22729963 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22729961) 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, 7884 + ... + 10373.

It is an arithmetic number, because the mean of its divisors is an integer number (2300508).

Almost surely, 2^22729965 is an apocalyptic number.

It is an amenable number.

22729965 is a deficient number, since it is larger than the sum of its proper divisors (14078163).

22729965 is a wasteful number, since it uses less digits than its factorization.

22729965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18348.

The product of its digits is 136080, while the sum is 42.

The square root of 22729965 is about 4767.5953058119. The cubic root of 22729965 is about 283.2693519506.

The spelling of 22729965 in words is "twenty-two million, seven hundred twenty-nine thousand, nine hundred sixty-five".