387647284 has 6 divisors (see below), whose sum is σ = 678382754. Its totient is φ = 193823640.

The previous prime is 387647237. The next prime is 387647317. The reversal of 387647284 is 482746783.

It can be written as a sum of positive squares in only one way, i.e., 385022884 + 2624400 = 19622^2 + 1620^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48455907 + ... + 48455914.

Almost surely, 2^387647284 is an apocalyptic number.

It is an amenable number.

387647284 is a deficient number, since it is larger than the sum of its proper divisors (290735470).

387647284 is a wasteful number, since it uses less digits than its factorization.

387647284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96911825 (or 96911823 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 49.

The square root of 387647284 is about 19688.7603469594. The cubic root of 387647284 is about 729.1422238526.

The spelling of 387647284 in words is "three hundred eighty-seven million, six hundred forty-seven thousand, two hundred eighty-four".