81067932 has 48 divisors (see below), whose sum is σ = 229286400. Its totient is φ = 24565680.

The previous prime is 81067907. The next prime is 81067937. The reversal of 81067932 is 23976018.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81067937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32932 + ... + 35307.

It is an arithmetic number, because the mean of its divisors is an integer number (4776800).

Almost surely, 2^81067932 is an apocalyptic number.

It is an amenable number.

81067932 is an abundant number, since it is smaller than the sum of its proper divisors (148218468).

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

81067932 is a wasteful number, since it uses less digits than its factorization.

81067932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68263 (or 68255 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 81067932 is about 9003.7732090496. The cubic root of 81067932 is about 432.7957939578.

The spelling of 81067932 in words is "eighty-one million, sixty-seven thousand, nine hundred thirty-two".