388949760 has 216 divisors, whose sum is σ = 1417350480. Its totient is φ = 98205696.

The previous prime is 388949747. The next prime is 388949773. The reversal of 388949760 is 67949883.

It is an interprime number because it is at equal distance from previous prime (388949747) and next prime (388949773).

It is a junction number, because it is equal to n+sod(n) for n = 388949697 and 388949706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217992 + ... + 219768.

Almost surely, 2^388949760 is an apocalyptic number.

388949760 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 388949760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708675240).

388949760 is an abundant number, since it is smaller than the sum of its proper divisors (1028400720).

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

388949760 is a wasteful number, since it uses less digits than its factorization.

388949760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823 (or 1806 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 388949760 is about 19721.8092476324. The cubic root of 388949760 is about 729.9579384034.

The spelling of 388949760 in words is "three hundred eighty-eight million, nine hundred forty-nine thousand, seven hundred sixty".