22509742 has 8 divisors (see below), whose sum is σ = 34929000. Its totient is φ = 10866744.

The previous prime is 22509731. The next prime is 22509743. The reversal of 22509742 is 24790522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22509743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193992 + ... + 194107.

It is an arithmetic number, because the mean of its divisors is an integer number (4366125).

Almost surely, 2^22509742 is an apocalyptic number.

22509742 is a deficient number, since it is larger than the sum of its proper divisors (12419258).

22509742 is a wasteful number, since it uses less digits than its factorization.

22509742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388130.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 22509742 is about 4744.4432760862. The cubic root of 22509742 is about 282.3515475541.

The spelling of 22509742 in words is "twenty-two million, five hundred nine thousand, seven hundred forty-two".