387544388 has 96 divisors (see below), whose sum is σ = 889878528. Its totient is φ = 143193600.

The previous prime is 387544379. The next prime is 387544397. The reversal of 387544388 is 883445783.

It is an interprime number because it is at equal distance from previous prime (387544379) and next prime (387544397).

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, 1607948 + ... + 1608188.

It is an arithmetic number, because the mean of its divisors is an integer number (9269568).

Almost surely, 2^387544388 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 387544388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444939264).

387544388 is an abundant number, since it is smaller than the sum of its proper divisors (502334140).

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

387544388 is a wasteful number, since it uses less digits than its factorization.

387544388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 511 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 50.

The square root of 387544388 is about 19686.1471090714. The cubic root of 387544388 is about 729.0777043262.

The spelling of 387544388 in words is "three hundred eighty-seven million, five hundred forty-four thousand, three hundred eighty-eight".