8191206 has 40 divisors (see below), whose sum is σ = 18687240. Its totient is φ = 2680992.

The previous prime is 8191193. The next prime is 8191217. The reversal of 8191206 is 6021918.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8191206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9130 + ... + 9986.

It is an arithmetic number, because the mean of its divisors is an integer number (467181).

Almost surely, 2^8191206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8191206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9343620).

8191206 is an abundant number, since it is smaller than the sum of its proper divisors (10496034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8191206 is a wasteful number, since it uses less digits than its factorization.

8191206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 8191206 is about 2862.0283017469. The cubic root of 8191206 is about 201.5808548996.

It can be divided in two parts, 819 and 1206, that added together give a square (2025 = 45²).

The spelling of 8191206 in words is "eight million, one hundred ninety-one thousand, two hundred six".