82216894 has 4 divisors (see below), whose sum is σ = 123325344. Its totient is φ = 41108446.

The previous prime is 82216889. The next prime is 82216921. The reversal of 82216894 is 49861228.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20554222 + ... + 20554225.

It is an arithmetic number, because the mean of its divisors is an integer number (30831336).

Almost surely, 2^82216894 is an apocalyptic number.

82216894 is a deficient number, since it is larger than the sum of its proper divisors (41108450).

82216894 is a wasteful number, since it uses less digits than its factorization.

82216894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41108449.

The product of its digits is 55296, while the sum is 40.

The square root of 82216894 is about 9067.3531970471. The cubic root of 82216894 is about 434.8308568628.

The spelling of 82216894 in words is "eighty-two million, two hundred sixteen thousand, eight hundred ninety-four".