81383322 has 8 divisors (see below), whose sum is σ = 162766656. Its totient is φ = 27127772.

The previous prime is 81383321. The next prime is 81383377. The reversal of 81383322 is 22338318.

It is a sphenic number, since it is the product of 3 distinct primes.

81383322 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 81383322.

It is not an unprimeable number, because it can be changed into a prime (81383321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6781938 + ... + 6781949.

It is an arithmetic number, because the mean of its divisors is an integer number (20345832).

Almost surely, 2^81383322 is an apocalyptic number.

81383322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81383322 is a wasteful number, since it uses less digits than its factorization.

81383322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13563892.

The product of its digits is 6912, while the sum is 30.

The square root of 81383322 is about 9021.2705313609. The cubic root of 81383322 is about 433.3563231721.

The spelling of 81383322 in words is "eighty-one million, three hundred eighty-three thousand, three hundred twenty-two".