77000308 has 72 divisors (see below), whose sum is σ = 173154240. Its totient is φ = 29103360.

The previous prime is 77000291. The next prime is 77000309. The reversal of 77000308 is 80300077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77000309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 865128 + ... + 865216.

It is an arithmetic number, because the mean of its divisors is an integer number (2404920).

Almost surely, 2^77000308 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 77000308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86577120).

77000308 is an abundant number, since it is smaller than the sum of its proper divisors (96153932).

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

77000308 is a wasteful number, since it uses less digits than its factorization.

77000308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 77000308 is about 8774.9819373033. The cubic root of 77000308 is about 425.4326537535.

The spelling of 77000308 in words is "seventy-seven million, three hundred eight", and thus it is an aban number.