308685044 has 6 divisors (see below), whose sum is σ = 540198834. Its totient is φ = 154342520.

The previous prime is 308685037. The next prime is 308685053. The reversal of 308685044 is 440586803.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 304921444 + 3763600 = 17462^2 + 1940^2 .

It is a junction number, because it is equal to n+sod(n) for n = 308684989 and 308685007.

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 as a sum of consecutive naturals, namely, 38585627 + ... + 38585634.

It is an arithmetic number, because the mean of its divisors is an integer number (90033139).

Almost surely, 2^308685044 is an apocalyptic number.

It is an amenable number.

308685044 is a deficient number, since it is larger than the sum of its proper divisors (231513790).

308685044 is a wasteful number, since it uses less digits than its factorization.

308685044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77171265 (or 77171263 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 308685044 is about 17569.4349368442. The cubic root of 308685044 is about 675.8316545660.

The spelling of 308685044 in words is "three hundred eight million, six hundred eighty-five thousand, forty-four".