82782530 has 16 divisors (see below), whose sum is σ = 154147320. Its totient is φ = 31971072.

The previous prime is 82782523. The next prime is 82782533. The reversal of 82782530 is 3528728.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72777961 + 10004569 = 8531^2 + 3163^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82782533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142439 + ... + 143018.

Almost surely, 2^82782530 is an apocalyptic number.

82782530 is a deficient number, since it is larger than the sum of its proper divisors (71364790).

82782530 is a wasteful number, since it uses less digits than its factorization.

82782530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285493.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 82782530 is about 9098.4905341491. The cubic root of 82782530 is about 435.8257622394.

The spelling of 82782530 in words is "eighty-two million, seven hundred eighty-two thousand, five hundred thirty".