22742271 has 24 divisors (see below), whose sum is σ = 33606144. Its totient is φ = 14817600.

The previous prime is 22742197. The next prime is 22742273. The reversal of 22742271 is 17224722.

It is not a de Polignac number, because 22742271 - 2⁹ = 22741759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22742273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115345 + ... + 115541.

It is an arithmetic number, because the mean of its divisors is an integer number (1400256).

Almost surely, 2^22742271 is an apocalyptic number.

22742271 is a deficient number, since it is larger than the sum of its proper divisors (10863873).

22742271 is a wasteful number, since it uses less digits than its factorization.

22742271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 428 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 22742271 is about 4768.8857189075. The cubic root of 22742271 is about 283.3204633908.

Adding to 22742271 its reverse (17224722), we get a palindrome (39966993).

The spelling of 22742271 in words is "twenty-two million, seven hundred forty-two thousand, two hundred seventy-one".