77708328 has 32 divisors (see below), whose sum is σ = 204496800. Its totient is φ = 24539328.

The previous prime is 77708317. The next prime is 77708341. The reversal of 77708328 is 82380777.

It is a self number, because there is not a number n which added to its sum of digits gives 77708328.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84751 + ... + 85662.

It is an arithmetic number, because the mean of its divisors is an integer number (6390525).

Almost surely, 2^77708328 is an apocalyptic number.

It is an amenable number.

77708328 is an abundant number, since it is smaller than the sum of its proper divisors (126788472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77708328 is a wasteful number, since it uses less digits than its factorization.

77708328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170441 (or 170437 counting only the distinct ones).

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

The square root of 77708328 is about 8815.2327252319. The cubic root of 77708328 is about 426.7326324873.

The spelling of 77708328 in words is "seventy-seven million, seven hundred eight thousand, three hundred twenty-eight".