387340280 has 32 divisors (see below), whose sum is σ = 872607600. Its totient is φ = 154742016.

The previous prime is 387340279. The next prime is 387340313. The reversal of 387340280 is 82043783.

It is a self number, because there is not a number n which added to its sum of digits gives 387340280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28724 + ... + 39996.

Almost surely, 2^387340280 is an apocalyptic number.

It is an amenable number.

387340280 is an abundant number, since it is smaller than the sum of its proper divisors (485267320).

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

387340280 is a wasteful number, since it uses less digits than its factorization.

387340280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12143 (or 12139 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 387340280 is about 19680.9623748434. The cubic root of 387340280 is about 728.9496873996.

The spelling of 387340280 in words is "three hundred eighty-seven million, three hundred forty thousand, two hundred eighty".