81076782 has 8 divisors (see below), whose sum is σ = 162153576. Its totient is φ = 27025592.

The previous prime is 81076769. The next prime is 81076799. The reversal of 81076782 is 28767018.

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

81076782 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 81076782.

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, 6756393 + ... + 6756404.

It is an arithmetic number, because the mean of its divisors is an integer number (20269197).

Almost surely, 2^81076782 is an apocalyptic number.

81076782 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.

81076782 is a wasteful number, since it uses less digits than its factorization.

81076782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13512802.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 81076782 is about 9004.2646562615. The cubic root of 81076782 is about 432.8115424925.

The spelling of 81076782 in words is "eighty-one million, seventy-six thousand, seven hundred eighty-two".