81486822 has 8 divisors (see below), whose sum is σ = 162973656. Its totient is φ = 27162272.

The previous prime is 81486793. The next prime is 81486859. The reversal of 81486822 is 22868418.

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

81486822 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6790563 + ... + 6790574.

It is an arithmetic number, because the mean of its divisors is an integer number (20371707).

Almost surely, 2^81486822 is an apocalyptic number.

81486822 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.

81486822 is a wasteful number, since it uses less digits than its factorization.

81486822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13581142.

The product of its digits is 49152, while the sum is 39.

The square root of 81486822 is about 9027.0051512116. The cubic root of 81486822 is about 433.5399536669.

The spelling of 81486822 in words is "eighty-one million, four hundred eighty-six thousand, eight hundred twenty-two".