8191772 has 12 divisors (see below), whose sum is σ = 14959056. Its totient is φ = 3917760.

The previous prime is 8191753. The next prime is 8191783. The reversal of 8191772 is 2771918.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44429 + ... + 44612.

It is an arithmetic number, because the mean of its divisors is an integer number (1246588).

Almost surely, 2^8191772 is an apocalyptic number.

It is an amenable number.

8191772 is a deficient number, since it is larger than the sum of its proper divisors (6767284).

8191772 is a wasteful number, since it uses less digits than its factorization.

8191772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89068 (or 89066 counting only the distinct ones).

The product of its digits is 7056, while the sum is 35.

The square root of 8191772 is about 2862.1271809617. The cubic root of 8191772 is about 201.5854977705.

The spelling of 8191772 in words is "eight million, one hundred ninety-one thousand, seven hundred seventy-two".