82216648 has 32 divisors (see below), whose sum is σ = 163548000. Its totient is φ = 38638080.

The previous prime is 82216639. The next prime is 82216657. The reversal of 82216648 is 84661228.

It is an interprime number because it is at equal distance from previous prime (82216639) and next prime (82216657).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17848 + ... + 21976.

It is an arithmetic number, because the mean of its divisors is an integer number (5110875).

Almost surely, 2^82216648 is an apocalyptic number.

It is an amenable number.

82216648 is a deficient number, since it is larger than the sum of its proper divisors (81331352).

82216648 is a wasteful number, since it uses less digits than its factorization.

82216648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285 (or 4281 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 82216648 is about 9067.3396318876. The cubic root of 82216648 is about 434.8304231786.

The spelling of 82216648 in words is "eighty-two million, two hundred sixteen thousand, six hundred forty-eight".