82871722 has 4 divisors (see below), whose sum is σ = 124307586. Its totient is φ = 41435860.

The previous prime is 82871681. The next prime is 82871731. The reversal of 82871722 is 22717828.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 46498761 + 36372961 = 6819^2 + 6031^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20717929 + ... + 20717932.

Almost surely, 2^82871722 is an apocalyptic number.

82871722 is a deficient number, since it is larger than the sum of its proper divisors (41435864).

82871722 is a wasteful number, since it uses less digits than its factorization.

82871722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41435863.

The product of its digits is 25088, while the sum is 37.

The square root of 82871722 is about 9103.3906869913. The cubic root of 82871722 is about 435.9822293068.

The spelling of 82871722 in words is "eighty-two million, eight hundred seventy-one thousand, seven hundred twenty-two".