388377660 has 96 divisors (see below), whose sum is σ = 1190391552. Its totient is φ = 93829120.

The previous prime is 388377643. The next prime is 388377683. The reversal of 388377660 is 66773883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232147 + ... + 233813.

It is an arithmetic number, because the mean of its divisors is an integer number (12399912).

Almost surely, 2^388377660 is an apocalyptic number.

388377660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388377660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (595195776).

388377660 is an abundant number, since it is smaller than the sum of its proper divisors (802013892).

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

388377660 is a wasteful number, since it uses less digits than its factorization.

388377660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043 (or 2041 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 388377660 is about 19707.2996628153. The cubic root of 388377660 is about 729.5998682888.

The spelling of 388377660 in words is "three hundred eighty-eight million, three hundred seventy-seven thousand, six hundred sixty".