77730628 has 12 divisors (see below), whose sum is σ = 137751040. Its totient is φ = 38373192.

The previous prime is 77730623. The next prime is 77730637. The reversal of 77730628 is 82603777.

It is not an unprimeable number, because it can be changed into a prime (77730623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122676 + ... + 123307.

Almost surely, 2^77730628 is an apocalyptic number.

It is an amenable number.

77730628 is a deficient number, since it is larger than the sum of its proper divisors (60020412).

77730628 is a wasteful number, since it uses less digits than its factorization.

77730628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246066 (or 246064 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 77730628 is about 8816.4974905004. The cubic root of 77730628 is about 426.7734484797.

The spelling of 77730628 in words is "seventy-seven million, seven hundred thirty thousand, six hundred twenty-eight".