387560640 has 112 divisors (see below), whose sum is σ = 1273027680. Its totient is φ = 99778560.

The previous prime is 387560627. The next prime is 387560647. The reversal of 387560640 is 46065783.

It is not an unprimeable number, because it can be changed into a prime (387560647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20880 + ... + 34800.

Almost surely, 2^387560640 is an apocalyptic number.

387560640 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 387560640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636513840).

387560640 is an abundant number, since it is smaller than the sum of its proper divisors (885467040).

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

387560640 is a wasteful number, since it uses less digits than its factorization.

387560640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13970 (or 13960 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 387560640 is about 19686.5598823157. The cubic root of 387560640 is about 729.0878956794.

The spelling of 387560640 in words is "three hundred eighty-seven million, five hundred sixty thousand, six hundred forty".