82581002 has 32 divisors (see below), whose sum is σ = 152461440. Its totient is φ = 32739840.

The previous prime is 82581001. The next prime is 82581013. The reversal of 82581002 is 20018528.

It is not an unprimeable number, because it can be changed into a prime (82581001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11102 + ... + 16982.

It is an arithmetic number, because the mean of its divisors is an integer number (4764420).

Almost surely, 2^82581002 is an apocalyptic number.

82581002 is a deficient number, since it is larger than the sum of its proper divisors (69880438).

82581002 is a wasteful number, since it uses less digits than its factorization.

82581002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5966.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 82581002 is about 9087.4089816625. The cubic root of 82581002 is about 435.4718129075.

The spelling of 82581002 in words is "eighty-two million, five hundred eighty-one thousand, two".