22196391 has 8 divisors (see below), whose sum is σ = 33823104. Its totient is φ = 12683640.

The previous prime is 22196371. The next prime is 22196423. The reversal of 22196391 is 19369122.

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

It is not a de Polignac number, because 22196391 - 2⁵ = 22196359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22196371) 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, 528465 + ... + 528506.

It is an arithmetic number, because the mean of its divisors is an integer number (4227888).

Almost surely, 2^22196391 is an apocalyptic number.

22196391 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22196391 is a deficient number, since it is larger than the sum of its proper divisors (11626713).

22196391 is a wasteful number, since it uses less digits than its factorization.

22196391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056981.

The product of its digits is 5832, while the sum is 33.

The square root of 22196391 is about 4711.3045963937. The cubic root of 22196391 is about 281.0352450483.

The spelling of 22196391 in words is "twenty-two million, one hundred ninety-six thousand, three hundred ninety-one".