387431266 has 8 divisors (see below), whose sum is σ = 582155820. Its totient is φ = 193379328.

The previous prime is 387431249. The next prime is 387431281. The reversal of 387431266 is 662134783.

It can be written as a sum of positive squares in 2 ways, for example, as 386948241 + 483025 = 19671^2 + 695^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 166711 + ... + 169018.

Almost surely, 2^387431266 is an apocalyptic number.

387431266 is a deficient number, since it is larger than the sum of its proper divisors (194724554).

387431266 is a wasteful number, since it uses less digits than its factorization.

387431266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336308.

The product of its digits is 145152, while the sum is 40.

The square root of 387431266 is about 19683.2737622581. The cubic root of 387431266 is about 729.0067595463.

The spelling of 387431266 in words is "three hundred eighty-seven million, four hundred thirty-one thousand, two hundred sixty-six".