82780076 has 12 divisors (see below), whose sum is σ = 145031208. Its totient is φ = 41342592.

The previous prime is 82780073. The next prime is 82780081. The reversal of 82780076 is 67008728.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (82780073) 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, 7781 + ... + 15036.

It is an arithmetic number, because the mean of its divisors is an integer number (12085934).

Almost surely, 2^82780076 is an apocalyptic number.

It is an amenable number.

82780076 is a deficient number, since it is larger than the sum of its proper divisors (62251132).

82780076 is a wasteful number, since it uses less digits than its factorization.

82780076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23728 (or 23726 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 82780076 is about 9098.3556756152. The cubic root of 82780076 is about 435.8214556665.

The spelling of 82780076 in words is "eighty-two million, seven hundred eighty thousand, seventy-six".