82680330 has 16 divisors (see below), whose sum is σ = 198432864. Its totient is φ = 22048080.

The previous prime is 82680307. The next prime is 82680347. The reversal of 82680330 is 3308628.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2756011 = 82680330 / (8 + 2 + 6 + 8 + 0 + 3 + 3 + 0).

It is a Curzon number.

It is an unprimeable number.

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, 1377976 + ... + 1378035.

It is an arithmetic number, because the mean of its divisors is an integer number (12402054).

Almost surely, 2^82680330 is an apocalyptic number.

82680330 is an abundant number, since it is smaller than the sum of its proper divisors (115752534).

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

82680330 is a wasteful number, since it uses less digits than its factorization.

82680330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756021.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 82680330 is about 9092.8724834345. The cubic root of 82680330 is about 435.6463373649.

Adding to 82680330 its reverse (3308628), we get a palindrome (85988958).

The spelling of 82680330 in words is "eighty-two million, six hundred eighty thousand, three hundred thirty".