82297216 has 16 divisors (see below), whose sum is σ = 163951740. Its totient is φ = 41148544.

The previous prime is 82297211. The next prime is 82297217. The reversal of 82297216 is 61279228.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×82297216² = 13545663522701312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82297211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321346 + ... + 321601.

Almost surely, 2^82297216 is an apocalyptic number.

It is an amenable number.

82297216 is a deficient number, since it is larger than the sum of its proper divisors (81654524).

82297216 is an equidigital number, since it uses as much as digits as its factorization.

82297216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642961 (or 642949 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 82297216 is about 9071.7813024786. The cubic root of 82297216 is about 434.9724138053.

The spelling of 82297216 in words is "eighty-two million, two hundred ninety-seven thousand, two hundred sixteen".