81038035 has 24 divisors (see below), whose sum is σ = 108965520. Its totient is φ = 57762432.

The previous prime is 81038003. The next prime is 81038047. The reversal of 81038035 is 53083018.

It is not a de Polignac number, because 81038035 - 2⁵ = 81038003 is a prime.

It is a super-2 number, since 2×81038035² = 13134326233322450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 81037994 and 81038012.

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 23 ways as a sum of consecutive naturals, for example, 22852 + ... + 26158.

It is an arithmetic number, because the mean of its divisors is an integer number (4540230).

Almost surely, 2^81038035 is an apocalyptic number.

81038035 is a deficient number, since it is larger than the sum of its proper divisors (27927485).

81038035 is a wasteful number, since it uses less digits than its factorization.

81038035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367 (or 3354 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 81038035 is about 9002.1128075580. The cubic root of 81038035 is about 432.7425839051.

The spelling of 81038035 in words is "eighty-one million, thirty-eight thousand, thirty-five".