81086264 has 16 divisors (see below), whose sum is σ = 173756400. Its totient is φ = 34751232.

The previous prime is 81086251. The next prime is 81086309. The reversal of 81086264 is 46268018.

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 3 ways as a sum of consecutive naturals, for example, 723929 + ... + 724040.

It is an arithmetic number, because the mean of its divisors is an integer number (10859775).

Almost surely, 2^81086264 is an apocalyptic number.

It is an amenable number.

81086264 is an abundant number, since it is smaller than the sum of its proper divisors (92670136).

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

81086264 is a wasteful number, since it uses less digits than its factorization.

81086264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447982 (or 1447978 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 81086264 is about 9004.7911691499. The cubic root of 81086264 is about 432.8284143966.

The spelling of 81086264 in words is "eighty-one million, eighty-six thousand, two hundred sixty-four".