11872217 has 8 divisors (see below), whose sum is σ = 13607616. Its totient is φ = 10146672.

The previous prime is 11872213. The next prime is 11872241. The reversal of 11872217 is 71227811.

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

It is a cyclic number.

It is not a de Polignac number, because 11872217 - 2² = 11872213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11872217.

It is not an unprimeable number, because it can be changed into a prime (11872213) 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, 338 + ... + 4884.

It is an arithmetic number, because the mean of its divisors is an integer number (1700952).

Almost surely, 2^11872217 is an apocalyptic number.

It is an amenable number.

11872217 is a deficient number, since it is larger than the sum of its proper divisors (1735399).

11872217 is an equidigital number, since it uses as much as digits as its factorization.

11872217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927.

The product of its digits is 1568, while the sum is 29.

The square root of 11872217 is about 3445.6083642805. The cubic root of 11872217 is about 228.1273078393.

The spelling of 11872217 in words is "eleven million, eight hundred seventy-two thousand, two hundred seventeen".