22191243 has 8 divisors (see below), whose sum is σ = 29644608. Its totient is φ = 14766024.

The previous prime is 22191223. The next prime is 22191287. The reversal of 22191243 is 34219122.

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

It is not a de Polignac number, because 22191243 - 2¹⁶ = 22125707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22191223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5121 + ... + 8402.

It is an arithmetic number, because the mean of its divisors is an integer number (3705576).

Almost surely, 2^22191243 is an apocalyptic number.

22191243 is a deficient number, since it is larger than the sum of its proper divisors (7453365).

22191243 is a wasteful number, since it uses less digits than its factorization.

22191243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14073.

The product of its digits is 864, while the sum is 24.

The square root of 22191243 is about 4710.7582192254. The cubic root of 22191243 is about 281.0135165714.

The spelling of 22191243 in words is "twenty-two million, one hundred ninety-one thousand, two hundred forty-three".