3688085428 has 6 divisors (see below), whose sum is σ = 6454149506. Its totient is φ = 1844042712.

The previous prime is 3688085389. The next prime is 3688085431. The reversal of 3688085428 is 8245808863.

It can be written as a sum of positive squares in only one way, i.e., 3643088164 + 44997264 = 60358^2 + 6708^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461010675 + ... + 461010682.

Almost surely, 2^3688085428 is an apocalyptic number.

It is an amenable number.

3688085428 is a deficient number, since it is larger than the sum of its proper divisors (2766064078).

3688085428 is a wasteful number, since it uses less digits than its factorization.

3688085428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922021361 (or 922021359 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 52.

The square root of 3688085428 is about 60729.6091540198. The cubic root of 3688085428 is about 1545.0184052576.

The spelling of 3688085428 in words is "three billion, six hundred eighty-eight million, eighty-five thousand, four hundred twenty-eight".