77420328 has 16 divisors (see below), whose sum is σ = 193550880. Its totient is φ = 25806768.

The previous prime is 77420297. The next prime is 77420347. The reversal of 77420328 is 82302477.

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, 1612900 + ... + 1612947.

It is an arithmetic number, because the mean of its divisors is an integer number (12096930).

Almost surely, 2^77420328 is an apocalyptic number.

It is an amenable number.

77420328 is an abundant number, since it is smaller than the sum of its proper divisors (116130552).

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

77420328 is a wasteful number, since it uses less digits than its factorization.

77420328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225856 (or 3225852 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 77420328 is about 8798.8822017345. The cubic root of 77420328 is about 426.2047991445.

The spelling of 77420328 in words is "seventy-seven million, four hundred twenty thousand, three hundred twenty-eight".