22729782 has 16 divisors (see below), whose sum is σ = 48133872. Its totient is φ = 7130880.

The previous prime is 22729781. The next prime is 22729783. The reversal of 22729782 is 28792722.

It is an interprime number because it is at equal distance from previous prime (22729781) and next prime (22729783).

It is a self number, because there is not a number n which added to its sum of digits gives 22729782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22729781) 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 7 ways as a sum of consecutive naturals, for example, 111319 + ... + 111522.

It is an arithmetic number, because the mean of its divisors is an integer number (3008367).

Almost surely, 2^22729782 is an apocalyptic number.

22729782 is an abundant number, since it is smaller than the sum of its proper divisors (25404090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22729782 is a wasteful number, since it uses less digits than its factorization.

22729782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222863.

The product of its digits is 56448, while the sum is 39.

The square root of 22729782 is about 4767.5761137081. The cubic root of 22729782 is about 283.2685917436.

The spelling of 22729782 in words is "twenty-two million, seven hundred twenty-nine thousand, seven hundred eighty-two".