387505056 has 48 divisors (see below), whose sum is σ = 1019396448. Its totient is φ = 128889600.

The previous prime is 387505051. The next prime is 387505061. The reversal of 387505056 is 650505783.

It is an interprime number because it is at equal distance from previous prime (387505051) and next prime (387505061).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (387505051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43026 + ... + 51246.

It is an arithmetic number, because the mean of its divisors is an integer number (21237426).

Almost surely, 2^387505056 is an apocalyptic number.

It is an amenable number.

387505056 is an abundant number, since it is smaller than the sum of its proper divisors (631891392).

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

387505056 is a wasteful number, since it uses less digits than its factorization.

387505056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8725 (or 8717 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 387505056 is about 19685.1481071390. The cubic root of 387505056 is about 729.0530387177.

The spelling of 387505056 in words is "three hundred eighty-seven million, five hundred five thousand, fifty-six".