82981770 has 16 divisors (see below), whose sum is σ = 199156320. Its totient is φ = 22128464.

The previous prime is 82981763. The next prime is 82981771. The reversal of 82981770 is 7718928.

It is not an unprimeable number, because it can be changed into a prime (82981771) 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, 1383000 + ... + 1383059.

It is an arithmetic number, because the mean of its divisors is an integer number (12447270).

Almost surely, 2^82981770 is an apocalyptic number.

82981770 is an abundant number, since it is smaller than the sum of its proper divisors (116174550).

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

82981770 is a wasteful number, since it uses less digits than its factorization.

82981770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766069.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 82981770 is about 9109.4330229713. The cubic root of 82981770 is about 436.1751288439.

The spelling of 82981770 in words is "eighty-two million, nine hundred eighty-one thousand, seven hundred seventy".