81834528 has 48 divisors (see below), whose sum is σ = 220631040. Its totient is φ = 26539776.

The previous prime is 81834517. The next prime is 81834551. The reversal of 81834528 is 82543818.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7968 + ... + 15071.

It is an arithmetic number, because the mean of its divisors is an integer number (4596480).

Almost surely, 2^81834528 is an apocalyptic number.

It is an amenable number.

81834528 is an abundant number, since it is smaller than the sum of its proper divisors (138796512).

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

81834528 is a wasteful number, since it uses less digits than its factorization.

81834528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23089 (or 23081 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 81834528 is about 9046.2438614046. The cubic root of 81834528 is about 434.1557200627.

The spelling of 81834528 in words is "eighty-one million, eight hundred thirty-four thousand, five hundred twenty-eight".