82117512 has 48 divisors (see below), whose sum is σ = 229582080. Its totient is φ = 26488800.

The previous prime is 82117501. The next prime is 82117513. The reversal of 82117512 is 21571128.

It is not an unprimeable number, because it can be changed into a prime (82117513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16164 + ... + 20627.

It is an arithmetic number, because the mean of its divisors is an integer number (4782960).

Almost surely, 2^82117512 is an apocalyptic number.

It is an amenable number.

82117512 is an abundant number, since it is smaller than the sum of its proper divisors (147464568).

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

82117512 is a wasteful number, since it uses less digits than its factorization.

82117512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36834 (or 36827 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 82117512 is about 9061.8713299186. The cubic root of 82117512 is about 434.6555815148.

The spelling of 82117512 in words is "eighty-two million, one hundred seventeen thousand, five hundred twelve".