81082035 has 12 divisors (see below), whose sum is σ = 140542272. Its totient is φ = 43243728.

The previous prime is 81082033. The next prime is 81082073. The reversal of 81082035 is 53028018.

It is a happy number.

It is not a de Polignac number, because 81082035 - 2¹ = 81082033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81082033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 900867 + ... + 900956.

It is an arithmetic number, because the mean of its divisors is an integer number (11711856).

Almost surely, 2^81082035 is an apocalyptic number.

81082035 is a deficient number, since it is larger than the sum of its proper divisors (59460237).

81082035 is a wasteful number, since it uses less digits than its factorization.

81082035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801834 (or 1801831 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 81082035 is about 9004.5563466503. The cubic root of 81082035 is about 432.8208896400.

The spelling of 81082035 in words is "eighty-one million, eighty-two thousand, thirty-five".