77385244 has 12 divisors (see below), whose sum is σ = 135485784. Its totient is φ = 38675024.

The previous prime is 77385227. The next prime is 77385257. The reversal of 77385244 is 44258377.

It is a junction number, because it is equal to n+sod(n) for n = 77385197 and 77385206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14874 + ... + 19390.

It is an arithmetic number, because the mean of its divisors is an integer number (11290482).

Almost surely, 2^77385244 is an apocalyptic number.

It is an amenable number.

77385244 is a deficient number, since it is larger than the sum of its proper divisors (58100540).

77385244 is a wasteful number, since it uses less digits than its factorization.

77385244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8804 (or 8802 counting only the distinct ones).

The product of its digits is 188160, while the sum is 40.

The square root of 77385244 is about 8796.8883134890. Note that the first 3 decimals coincide. The cubic root of 77385244 is about 426.1404093870.

The spelling of 77385244 in words is "seventy-seven million, three hundred eighty-five thousand, two hundred forty-four".