22158284 has 6 divisors (see below), whose sum is σ = 38777004. Its totient is φ = 11079140.

The previous prime is 22158281. The next prime is 22158299. The reversal of 22158284 is 48285122.

It is a self number, because there is not a number n which added to its sum of digits gives 22158284.

It is not an unprimeable number, because it can be changed into a prime (22158281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769782 + ... + 2769789.

It is an arithmetic number, because the mean of its divisors is an integer number (6462834).

Almost surely, 2^22158284 is an apocalyptic number.

It is an amenable number.

22158284 is a deficient number, since it is larger than the sum of its proper divisors (16618720).

22158284 is a wasteful number, since it uses less digits than its factorization.

22158284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539575 (or 5539573 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 22158284 is about 4707.2586502125. The cubic root of 22158284 is about 280.8743248246.

The spelling of 22158284 in words is "twenty-two million, one hundred fifty-eight thousand, two hundred eighty-four".