387985240 has 16 divisors (see below), whose sum is σ = 872966880. Its totient is φ = 155194080.

The previous prime is 387985223. The next prime is 387985249. The reversal of 387985240 is 42589783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387985249) 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 3 ways as a sum of consecutive naturals, for example, 4849776 + ... + 4849855.

It is an arithmetic number, because the mean of its divisors is an integer number (54560430).

Almost surely, 2^387985240 is an apocalyptic number.

It is an amenable number.

387985240 is an abundant number, since it is smaller than the sum of its proper divisors (484981640).

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

387985240 is a wasteful number, since it uses less digits than its factorization.

387985240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9699642 (or 9699638 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 387985240 is about 19697.3409372940. The cubic root of 387985240 is about 729.3540542321.

The spelling of 387985240 in words is "three hundred eighty-seven million, nine hundred eighty-five thousand, two hundred forty".