388952878 has 16 divisors (see below), whose sum is σ = 588416400. Its totient is φ = 192819136.

The previous prime is 388952869. The next prime is 388952881. The reversal of 388952878 is 878259883.

It is a congruent number.

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, 254625 + ... + 256147.

It is an arithmetic number, because the mean of its divisors is an integer number (36776025).

Almost surely, 2^388952878 is an apocalyptic number.

388952878 is a deficient number, since it is larger than the sum of its proper divisors (199463522).

388952878 is a wasteful number, since it uses less digits than its factorization.

388952878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531.

The product of its digits is 7741440, while the sum is 58.

The square root of 388952878 is about 19721.8882970166. Note that the first 3 decimals coincide. The cubic root of 388952878 is about 729.9598889576.

The spelling of 388952878 in words is "three hundred eighty-eight million, nine hundred fifty-two thousand, eight hundred seventy-eight".