307776386 has 16 divisors (see below), whose sum is σ = 482497344. Its totient is φ = 146965104.

The previous prime is 307776377. The next prime is 307776407. The reversal of 307776386 is 683677703.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 307776386.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26201 + ... + 36083.

It is an arithmetic number, because the mean of its divisors is an integer number (30156084).

Almost surely, 2^307776386 is an apocalyptic number.

307776386 is a deficient number, since it is larger than the sum of its proper divisors (174720958).

307776386 is a wasteful number, since it uses less digits than its factorization.

307776386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10585.

The product of its (nonzero) digits is 889056, while the sum is 47.

The square root of 307776386 is about 17543.5568229478. The cubic root of 307776386 is about 675.1678675312.

The spelling of 307776386 in words is "three hundred seven million, seven hundred seventy-six thousand, three hundred eighty-six".