387720708 has 12 divisors (see below), whose sum is σ = 904681680. Its totient is φ = 129240232.

The previous prime is 387720701. The next prime is 387720721. The reversal of 387720708 is 807027783.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 387720708.

It is not an unprimeable number, because it can be changed into a prime (387720701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16155018 + ... + 16155041.

It is an arithmetic number, because the mean of its divisors is an integer number (75390140).

Almost surely, 2^387720708 is an apocalyptic number.

It is an amenable number.

387720708 is an abundant number, since it is smaller than the sum of its proper divisors (516960972).

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

387720708 is a wasteful number, since it uses less digits than its factorization.

387720708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32310066 (or 32310064 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 387720708 is about 19690.6248758134. The cubic root of 387720708 is about 729.1882563853.

The spelling of 387720708 in words is "three hundred eighty-seven million, seven hundred twenty thousand, seven hundred eight".