387274728 has 16 divisors (see below), whose sum is σ = 968186880. Its totient is φ = 129091568.

The previous prime is 387274721. The next prime is 387274733. The reversal of 387274728 is 827472783.

It is not an unprimeable number, because it can be changed into a prime (387274721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8068200 + ... + 8068247.

It is an arithmetic number, because the mean of its divisors is an integer number (60511680).

Almost surely, 2^387274728 is an apocalyptic number.

It is an amenable number.

387274728 is an abundant number, since it is smaller than the sum of its proper divisors (580912152).

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

387274728 is a wasteful number, since it uses less digits than its factorization.

387274728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16136456 (or 16136452 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 48.

The square root of 387274728 is about 19679.2969386612. The cubic root of 387274728 is about 728.9085635195.

The spelling of 387274728 in words is "three hundred eighty-seven million, two hundred seventy-four thousand, seven hundred twenty-eight".