387313828 has 24 divisors (see below), whose sum is σ = 745970400. Its totient is φ = 174491520.

The previous prime is 387313807. The next prime is 387313831. The reversal of 387313828 is 828313783.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33978 + ... + 43921.

It is an arithmetic number, because the mean of its divisors is an integer number (31082100).

Almost surely, 2^387313828 is an apocalyptic number.

It is an amenable number.

387313828 is a deficient number, since it is larger than the sum of its proper divisors (358656572).

387313828 is a wasteful number, since it uses less digits than its factorization.

387313828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78027 (or 78025 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 387313828 is about 19680.2903433867. The cubic root of 387313828 is about 728.9330933633.

The spelling of 387313828 in words is "three hundred eighty-seven million, three hundred thirteen thousand, eight hundred twenty-eight".