82780834 has 8 divisors (see below), whose sum is σ = 130706640. Its totient is φ = 39211956.

The previous prime is 82780811. The next prime is 82780847. The reversal of 82780834 is 43808728.

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

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, 1089184 + ... + 1089259.

It is an arithmetic number, because the mean of its divisors is an integer number (16338330).

Almost surely, 2^82780834 is an apocalyptic number.

82780834 is a deficient number, since it is larger than the sum of its proper divisors (47925806).

82780834 is a wasteful number, since it uses less digits than its factorization.

82780834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178464.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 82780834 is about 9098.3973313985. The cubic root of 82780834 is about 435.8227859047.

The spelling of 82780834 in words is "eighty-two million, seven hundred eighty thousand, eight hundred thirty-four".