387189228 has 12 divisors (see below), whose sum is σ = 903441560. Its totient is φ = 129063072.

The previous prime is 387189223. The next prime is 387189241. The reversal of 387189228 is 822981783.

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

It is not an unprimeable number, because it can be changed into a prime (387189223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16132873 + ... + 16132896.

Almost surely, 2^387189228 is an apocalyptic number.

It is an amenable number.

387189228 is an abundant number, since it is smaller than the sum of its proper divisors (516252332).

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

387189228 is a wasteful number, since it uses less digits than its factorization.

387189228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32265776 (or 32265774 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 387189228 is about 19677.1244850461. The cubic root of 387189228 is about 728.8549183381.

The spelling of 387189228 in words is "three hundred eighty-seven million, one hundred eighty-nine thousand, two hundred twenty-eight".