82171234 has 16 divisors (see below), whose sum is σ = 131316768. Its totient is φ = 38428992.

The previous prime is 82171231. The next prime is 82171241. The reversal of 82171234 is 43217128.

It is a super-2 number, since 2×82171234² = 13504223394165512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82171231) 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, 1872 + ... + 12955.

It is an arithmetic number, because the mean of its divisors is an integer number (8207298).

Almost surely, 2^82171234 is an apocalyptic number.

82171234 is a deficient number, since it is larger than the sum of its proper divisors (49145534).

82171234 is a wasteful number, since it uses less digits than its factorization.

82171234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15009.

The product of its digits is 2688, while the sum is 28.

The square root of 82171234 is about 9064.8350233195. The cubic root of 82171234 is about 434.7503460231.

The spelling of 82171234 in words is "eighty-two million, one hundred seventy-one thousand, two hundred thirty-four".