77889308 has 24 divisors (see below), whose sum is σ = 164943072. Its totient is φ = 31417344.

The previous prime is 77889289. The next prime is 77889311. The reversal of 77889308 is 80398877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81341 + ... + 82292.

It is an arithmetic number, because the mean of its divisors is an integer number (6872628).

Almost surely, 2^77889308 is an apocalyptic number.

It is an amenable number.

77889308 is an abundant number, since it is smaller than the sum of its proper divisors (87053764).

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

77889308 is a wasteful number, since it uses less digits than its factorization.

77889308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163661 (or 163659 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 77889308 is about 8825.4919409628. The cubic root of 77889308 is about 427.0636574704.

The spelling of 77889308 in words is "seventy-seven million, eight hundred eighty-nine thousand, three hundred eight".