77380782 has 8 divisors (see below), whose sum is σ = 154761576. Its totient is φ = 25793592.

The previous prime is 77380739. The next prime is 77380813. The reversal of 77380782 is 28708377.

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

77380782 is an admirable number.

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, 6448393 + ... + 6448404.

It is an arithmetic number, because the mean of its divisors is an integer number (19345197).

Almost surely, 2^77380782 is an apocalyptic number.

77380782 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.

77380782 is a wasteful number, since it uses less digits than its factorization.

77380782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12896802.

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 77380782 is about 8796.6346974283. The cubic root of 77380782 is about 426.1322188718.

The spelling of 77380782 in words is "seventy-seven million, three hundred eighty thousand, seven hundred eighty-two".