387105644 has 12 divisors (see below), whose sum is σ = 677640600. Its totient is φ = 193494048.

The previous prime is 387105643. The next prime is 387105679. The reversal of 387105644 is 446501783.

It is a junction number, because it is equal to n+sod(n) for n = 387105598 and 387105607.

It is not an unprimeable number, because it can be changed into a prime (387105643) 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, 2312 + ... + 27920.

It is an arithmetic number, because the mean of its divisors is an integer number (56470050).

Almost surely, 2^387105644 is an apocalyptic number.

It is an amenable number.

387105644 is a deficient number, since it is larger than the sum of its proper divisors (290534956).

387105644 is a wasteful number, since it uses less digits than its factorization.

387105644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29392 (or 29390 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 387105644 is about 19675.0004828462. Note that the first 3 decimals coincide. The cubic root of 387105644 is about 728.8024676763.

The spelling of 387105644 in words is "three hundred eighty-seven million, one hundred five thousand, six hundred forty-four".