22764729 has 16 divisors (see below), whose sum is σ = 32864832. Its totient is φ = 13933248.

The previous prime is 22764727. The next prime is 22764761. The reversal of 22764729 is 92746722.

It is not a de Polignac number, because 22764729 - 2¹ = 22764727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22764727) 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, 6202 + ... + 9164.

It is an arithmetic number, because the mean of its divisors is an integer number (2054052).

Almost surely, 2^22764729 is an apocalyptic number.

It is an amenable number.

22764729 is a deficient number, since it is larger than the sum of its proper divisors (10100103).

22764729 is a wasteful number, since it uses less digits than its factorization.

22764729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176.

The product of its digits is 84672, while the sum is 39.

The square root of 22764729 is about 4771.2397759911. The cubic root of 22764729 is about 283.4136923929.

The spelling of 22764729 in words is "twenty-two million, seven hundred sixty-four thousand, seven hundred twenty-nine".