81236876 has 12 divisors (see below), whose sum is σ = 162473808. Its totient is φ = 34815792.

The previous prime is 81236873. The next prime is 81236879. The reversal of 81236876 is 67863218.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (81236873) and next prime (81236879).

81236876 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (81236873) 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, 1450631 + ... + 1450686.

It is an arithmetic number, because the mean of its divisors is an integer number (13539484).

Almost surely, 2^81236876 is an apocalyptic number.

It is an amenable number.

81236876 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.

81236876 is a wasteful number, since it uses less digits than its factorization.

81236876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901328 (or 2901326 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 81236876 is about 9013.1501707228. The cubic root of 81236876 is about 433.0962313696.

The spelling of 81236876 in words is "eighty-one million, two hundred thirty-six thousand, eight hundred seventy-six".