22072191 has 8 divisors (see below), whose sum is σ = 29536944. Its totient is φ = 14661120.

The previous prime is 22072189. The next prime is 22072199. The reversal of 22072191 is 19127022.

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

It is not a de Polignac number, because 22072191 - 2¹ = 22072189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22072199) 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, 12450 + ... + 14111.

It is an arithmetic number, because the mean of its divisors is an integer number (3692118).

Almost surely, 2^22072191 is an apocalyptic number.

22072191 is a deficient number, since it is larger than the sum of its proper divisors (7464753).

22072191 is a wasteful number, since it uses less digits than its factorization.

22072191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26841.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 22072191 is about 4698.1050435255. The cubic root of 22072191 is about 280.5100863490.

The spelling of 22072191 in words is "twenty-two million, seventy-two thousand, one hundred ninety-one".