22147293 has 32 divisors (see below), whose sum is σ = 36311040. Its totient is φ = 11724480.

The previous prime is 22147291. The next prime is 22147309. The reversal of 22147293 is 39274122.

It is not a de Polignac number, because 22147293 - 2¹ = 22147291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22147293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22147291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18163 + ... + 19343.

It is an arithmetic number, because the mean of its divisors is an integer number (1134720).

Almost surely, 2^22147293 is an apocalyptic number.

It is an amenable number.

22147293 is a deficient number, since it is larger than the sum of its proper divisors (14163747).

22147293 is a wasteful number, since it uses less digits than its factorization.

22147293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257.

The product of its digits is 6048, while the sum is 30.

The square root of 22147293 is about 4706.0910530928. The cubic root of 22147293 is about 280.8278771805.

The spelling of 22147293 in words is "twenty-two million, one hundred forty-seven thousand, two hundred ninety-three".