387535640 has 16 divisors (see below), whose sum is σ = 871955280. Its totient is φ = 155014240.

The previous prime is 387535573. The next prime is 387535663. The reversal of 387535640 is 46535783.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4844156 + ... + 4844235.

It is an arithmetic number, because the mean of its divisors is an integer number (54497205).

Almost surely, 2^387535640 is an apocalyptic number.

It is an amenable number.

387535640 is an abundant number, since it is smaller than the sum of its proper divisors (484419640).

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

387535640 is a wasteful number, since it uses less digits than its factorization.

387535640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9688402 (or 9688398 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 387535640 is about 19685.9249211207. The cubic root of 387535640 is about 729.0722184860.

The spelling of 387535640 in words is "three hundred eighty-seven million, five hundred thirty-five thousand, six hundred forty".