82210971 has 8 divisors (see below), whose sum is σ = 111158784. Its totient is φ = 54035240.

The previous prime is 82210951. The next prime is 82210987. The reversal of 82210971 is 17901228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82210971 - 2⁵ = 82210939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82210951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192771 + ... + 193196.

It is an arithmetic number, because the mean of its divisors is an integer number (13894848).

Almost surely, 2^82210971 is an apocalyptic number.

82210971 is a deficient number, since it is larger than the sum of its proper divisors (28947813).

82210971 is a wasteful number, since it uses less digits than its factorization.

82210971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386041.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 82210971 is about 9067.0265798662. The cubic root of 82210971 is about 434.8204147063.

The spelling of 82210971 in words is "eighty-two million, two hundred ten thousand, nine hundred seventy-one".