82112070 has 64 divisors (see below), whose sum is σ = 209226240. Its totient is φ = 20579328.

The previous prime is 82112027. The next prime is 82112077. The reversal of 82112070 is 7021128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82112077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39702 + ... + 41718.

It is an arithmetic number, because the mean of its divisors is an integer number (3269160).

Almost surely, 2^82112070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82112070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104613120).

82112070 is an abundant number, since it is smaller than the sum of its proper divisors (127114170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82112070 is a wasteful number, since it uses less digits than its factorization.

82112070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 82112070 is about 9061.5710558379. The cubic root of 82112070 is about 434.6459796330.

Adding to 82112070 its reverse (7021128), we get a palindrome (89133198).

The spelling of 82112070 in words is "eighty-two million, one hundred twelve thousand, seventy".