81014782 has 8 divisors (see below), whose sum is σ = 121633200. Its totient is φ = 40470384.

The previous prime is 81014767. The next prime is 81014797. The reversal of 81014782 is 28741018.

It is an interprime number because it is at equal distance from previous prime (81014767) and next prime (81014797).

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 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, 15682 + ... + 20197.

It is an arithmetic number, because the mean of its divisors is an integer number (15204150).

Almost surely, 2^81014782 is an apocalyptic number.

81014782 is a deficient number, since it is larger than the sum of its proper divisors (40618418).

81014782 is a wasteful number, since it uses less digits than its factorization.

81014782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37010.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 81014782 is about 9000.8211847586. The cubic root of 81014782 is about 432.7011896557.

It can be divided in two parts, 81014 and 782, that added together give a square (81796 = 286²).

The spelling of 81014782 in words is "eighty-one million, fourteen thousand, seven hundred eighty-two".