81354876 has 24 divisors (see below), whose sum is σ = 190055040. Its totient is φ = 27085872.

The previous prime is 81354869. The next prime is 81354899. The reversal of 81354876 is 67845318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7785 + ... + 14943.

It is an arithmetic number, because the mean of its divisors is an integer number (7918960).

Almost surely, 2^81354876 is an apocalyptic number.

It is an amenable number.

81354876 is an abundant number, since it is smaller than the sum of its proper divisors (108700164).

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

81354876 is a wasteful number, since it uses less digits than its factorization.

81354876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8113 (or 8111 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 81354876 is about 9019.6937863766. The cubic root of 81354876 is about 433.3058267879.

The spelling of 81354876 in words is "eighty-one million, three hundred fifty-four thousand, eight hundred seventy-six".