77030208 has 42 divisors (see below), whose sum is σ = 220794834. Its totient is φ = 25676544.

The previous prime is 77030207. The next prime is 77030231. The reversal of 77030208 is 80203077.

77030208 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in only one way, i.e., 65415744 + 11614464 = 8088^2 + 3408^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77030207) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 66291 + ... + 67442.

Almost surely, 2^77030208 is an apocalyptic number.

It is an amenable number.

77030208 is an abundant number, since it is smaller than the sum of its proper divisors (143764626).

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

77030208 is a wasteful number, since it uses less digits than its factorization.

77030208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133751 (or 133738 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 77030208 is about 8776.6854791544. The cubic root of 77030208 is about 425.4877132312.

The spelling of 77030208 in words is "seventy-seven million, thirty thousand, two hundred eight".