22709724 has 12 divisors (see below), whose sum is σ = 52989384. Its totient is φ = 7569904.

The previous prime is 22709707. The next prime is 22709741. The reversal of 22709724 is 42790722.

It is an interprime number because it is at equal distance from previous prime (22709707) and next prime (22709741).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 946227 + ... + 946250.

It is an arithmetic number, because the mean of its divisors is an integer number (4415782).

Almost surely, 2^22709724 is an apocalyptic number.

It is an amenable number.

22709724 is an abundant number, since it is smaller than the sum of its proper divisors (30279660).

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

22709724 is a wasteful number, since it uses less digits than its factorization.

22709724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892484 (or 1892482 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 22709724 is about 4765.4720647592. The cubic root of 22709724 is about 283.1852433340.

The spelling of 22709724 in words is "twenty-two million, seven hundred nine thousand, seven hundred twenty-four".