81485796 has 24 divisors (see below), whose sum is σ = 217295680. Its totient is φ = 23281632.

The previous prime is 81485773. The next prime is 81485797. The reversal of 81485796 is 69758418.

It is not an unprimeable number, because it can be changed into a prime (81485797) 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 7 ways as a sum of consecutive naturals, for example, 484951 + ... + 485118.

Almost surely, 2^81485796 is an apocalyptic number.

It is an amenable number.

81485796 is an abundant number, since it is smaller than the sum of its proper divisors (135809884).

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

81485796 is a wasteful number, since it uses less digits than its factorization.

81485796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970083 (or 970081 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 81485796 is about 9026.9483215536. The cubic root of 81485796 is about 433.5381340931.

The spelling of 81485796 in words is "eighty-one million, four hundred eighty-five thousand, seven hundred ninety-six".