388238760 has 288 divisors, whose sum is σ = 1581620040. Its totient is φ = 81865728.

The previous prime is 388238731. The next prime is 388238797. The reversal of 388238760 is 67832883.

It can be written as a sum of positive squares in 4 ways, for example, as 219810276 + 168428484 = 14826^2 + 12978^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 228474 + ... + 230166.

Almost surely, 2^388238760 is an apocalyptic number.

388238760 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 388238760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790810020).

388238760 is an abundant number, since it is smaller than the sum of its proper divisors (1193381280).

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

388238760 is a wasteful number, since it uses less digits than its factorization.

388238760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 1723 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 388238760 is about 19703.7752727745. The cubic root of 388238760 is about 729.5128795011.

The spelling of 388238760 in words is "three hundred eighty-eight million, two hundred thirty-eight thousand, seven hundred sixty".