82706290 has 16 divisors (see below), whose sum is σ = 149646168. Its totient is φ = 32910336.

The previous prime is 82706287. The next prime is 82706291. The reversal of 82706290 is 9260728.

It can be written as a sum of positive squares in 4 ways, for example, as 78907689 + 3798601 = 8883^2 + 1949^2 .

It is not an unprimeable number, because it can be changed into a prime (82706291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19497 + ... + 23356.

Almost surely, 2^82706290 is an apocalyptic number.

82706290 is a deficient number, since it is larger than the sum of its proper divisors (66939878).

82706290 is a wasteful number, since it uses less digits than its factorization.

82706290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43053.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 82706290 is about 9094.2998631011. The cubic root of 82706290 is about 435.6919273922.

The spelling of 82706290 in words is "eighty-two million, seven hundred six thousand, two hundred ninety".