82106870 has 32 divisors (see below), whose sum is σ = 150115680. Its totient is φ = 32331520.

The previous prime is 82106863. The next prime is 82106873. The reversal of 82106870 is 7860128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82106873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305096 + ... + 305364.

It is an arithmetic number, because the mean of its divisors is an integer number (4691115).

Almost surely, 2^82106870 is an apocalyptic number.

82106870 is a deficient number, since it is larger than the sum of its proper divisors (68008810).

82106870 is a wasteful number, since it uses less digits than its factorization.

82106870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 82106870 is about 9061.2841253323. The cubic root of 82106870 is about 434.6368043404.

Adding to 82106870 its reverse (7860128), we get a palindrome (89966998).

The spelling of 82106870 in words is "eighty-two million, one hundred six thousand, eight hundred seventy".