388055860 has 12 divisors (see below), whose sum is σ = 814917348. Its totient is φ = 155222336.

The previous prime is 388055813. The next prime is 388055881. The reversal of 388055860 is 68550883.

It can be written as a sum of positive squares in 2 ways, for example, as 301230736 + 86825124 = 17356^2 + 9318^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9701377 + ... + 9701416.

It is an arithmetic number, because the mean of its divisors is an integer number (67909779).

Almost surely, 2^388055860 is an apocalyptic number.

It is an amenable number.

388055860 is an abundant number, since it is smaller than the sum of its proper divisors (426861488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388055860 is a wasteful number, since it uses less digits than its factorization.

388055860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19402802 (or 19402800 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 388055860 is about 19699.1334834809. The cubic root of 388055860 is about 729.3983032166.

The spelling of 388055860 in words is "three hundred eighty-eight million, fifty-five thousand, eight hundred sixty".