82197156 has 24 divisors (see below), whose sum is σ = 192792544. Its totient is φ = 27256320.

The previous prime is 82197127. The next prime is 82197161. The reversal of 82197156 is 65179128.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15430 + ... + 20061.

Almost surely, 2^82197156 is an apocalyptic number.

It is an amenable number.

82197156 is an abundant number, since it is smaller than the sum of its proper divisors (110595388).

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

82197156 is a wasteful number, since it uses less digits than its factorization.

82197156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35691 (or 35689 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 82197156 is about 9066.2647214826. The cubic root of 82197156 is about 434.7960571278.

The spelling of 82197156 in words is "eighty-two million, one hundred ninety-seven thousand, one hundred fifty-six".