81294814 has 8 divisors (see below), whose sum is σ = 122261760. Its totient is φ = 40540896.

The previous prime is 81294779. The next prime is 81294821. The reversal of 81294814 is 41849218.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52299 + ... + 53830.

It is an arithmetic number, because the mean of its divisors is an integer number (15282720).

Almost surely, 2^81294814 is an apocalyptic number.

81294814 is a deficient number, since it is larger than the sum of its proper divisors (40966946).

81294814 is a wasteful number, since it uses less digits than its factorization.

81294814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106514.

The product of its digits is 18432, while the sum is 37.

The square root of 81294814 is about 9016.3636794442. The cubic root of 81294814 is about 433.1991680640.

The spelling of 81294814 in words is "eighty-one million, two hundred ninety-four thousand, eight hundred fourteen".