81752834 has 32 divisors (see below), whose sum is σ = 129254400. Its totient is φ = 38750400.

The previous prime is 81752831. The next prime is 81752849. The reversal of 81752834 is 43825718.

It is not an unprimeable number, because it can be changed into a prime (81752831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 749972 + ... + 750080.

It is an arithmetic number, because the mean of its divisors is an integer number (4039200).

Almost surely, 2^81752834 is an apocalyptic number.

81752834 is a deficient number, since it is larger than the sum of its proper divisors (47501566).

81752834 is a wasteful number, since it uses less digits than its factorization.

81752834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338.

The product of its digits is 53760, while the sum is 38.

The square root of 81752834 is about 9041.7273792124. The cubic root of 81752834 is about 434.0112019025.

The spelling of 81752834 in words is "eighty-one million, seven hundred fifty-two thousand, eight hundred thirty-four".