81460286 has 8 divisors (see below), whose sum is σ = 122350824. Its totient is φ = 40676680.

The previous prime is 81460279. The next prime is 81460289. The reversal of 81460286 is 68206418.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81460289) 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 3 ways as a sum of consecutive naturals, for example, 24800 + ... + 27891.

It is an arithmetic number, because the mean of its divisors is an integer number (15293853).

Almost surely, 2^81460286 is an apocalyptic number.

81460286 is a deficient number, since it is larger than the sum of its proper divisors (40890538).

81460286 is a wasteful number, since it uses less digits than its factorization.

81460286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53466.

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

The square root of 81460286 is about 9025.5352195867. The cubic root of 81460286 is about 433.4928881212.

The spelling of 81460286 in words is "eighty-one million, four hundred sixty thousand, two hundred eighty-six".