387660756 has 72 divisors (see below), whose sum is σ = 1057828800. Its totient is φ = 110170368.

The previous prime is 387660751. The next prime is 387660799. The reversal of 387660756 is 657066783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387660751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115356 + ... + 118668.

Almost surely, 2^387660756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387660756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528914400).

387660756 is an abundant number, since it is smaller than the sum of its proper divisors (670168044).

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

387660756 is a wasteful number, since it uses less digits than its factorization.

387660756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533 (or 3524 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The square root of 387660756 is about 19689.1024681167. The cubic root of 387660756 is about 729.1506704402.

The spelling of 387660756 in words is "three hundred eighty-seven million, six hundred sixty thousand, seven hundred fifty-six".