82647918 has 16 divisors (see below), whose sum is σ = 183662160. Its totient is φ = 27549288.

The previous prime is 82647913. The next prime is 82647919. The reversal of 82647918 is 81974628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82647911) 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, 765205 + ... + 765312.

It is an arithmetic number, because the mean of its divisors is an integer number (11478885).

Almost surely, 2^82647918 is an apocalyptic number.

82647918 is an abundant number, since it is smaller than the sum of its proper divisors (101014242).

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

82647918 is a wasteful number, since it uses less digits than its factorization.

82647918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530528 (or 1530522 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 82647918 is about 9091.0900336538. The cubic root of 82647918 is about 435.5894031679.

The spelling of 82647918 in words is "eighty-two million, six hundred forty-seven thousand, nine hundred eighteen".