77385308 has 108 divisors (see below), whose sum is σ = 187220376. Its totient is φ = 27720000.

The previous prime is 77385307. The next prime is 77385323. The reversal of 77385308 is 80358377.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77385307) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 308183 + ... + 308433.

It is an arithmetic number, because the mean of its divisors is an integer number (1733522).

Almost surely, 2^77385308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77385308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93610188).

77385308 is an abundant number, since it is smaller than the sum of its proper divisors (109835068).

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

77385308 is a wasteful number, since it uses less digits than its factorization.

77385308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 77385308 is about 8796.8919511382. The cubic root of 77385308 is about 426.1405268640.

The spelling of 77385308 in words is "seventy-seven million, three hundred eighty-five thousand, three hundred eight".