82147806 has 24 divisors (see below), whose sum is σ = 191678760. Its totient is φ = 25276176.

The previous prime is 82147783. The next prime is 82147817. The reversal of 82147806 is 60874128.

It is a super-2 number, since 2×82147806² = 13496524061227272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175296 + ... + 175763.

It is an arithmetic number, because the mean of its divisors is an integer number (7986615).

Almost surely, 2^82147806 is an apocalyptic number.

82147806 is an abundant number, since it is smaller than the sum of its proper divisors (109530954).

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

82147806 is a wasteful number, since it uses less digits than its factorization.

82147806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351080 (or 351077 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 82147806 is about 9063.5426848446. The cubic root of 82147806 is about 434.7090245908.

The spelling of 82147806 in words is "eighty-two million, one hundred forty-seven thousand, eight hundred six".