387687284 has 18 divisors (see below), whose sum is σ = 681858450. Its totient is φ = 192875376.

The previous prime is 387687281. The next prime is 387687323. The reversal of 387687284 is 482786783.

It can be written as a sum of positive squares in only one way, i.e., 367795684 + 19891600 = 19178^2 + 4460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387687281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197942 + ... + 199890.

It is an arithmetic number, because the mean of its divisors is an integer number (37881025).

Almost surely, 2^387687284 is an apocalyptic number.

It is an amenable number.

387687284 is a deficient number, since it is larger than the sum of its proper divisors (294171166).

387687284 is a wasteful number, since it uses less digits than its factorization.

387687284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2174 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 53.

The square root of 387687284 is about 19689.7761287426. The cubic root of 387687284 is about 729.1673022224.

The spelling of 387687284 in words is "three hundred eighty-seven million, six hundred eighty-seven thousand, two hundred eighty-four".