387640196 has 12 divisors (see below), whose sum is σ = 679857948. Its totient is φ = 193395072.

The previous prime is 387640181. The next prime is 387640217. The reversal of 387640196 is 691046783.

It can be written as a sum of positive squares in 2 ways, for example, as 231040000 + 156600196 = 15200^2 + 12514^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104201 + ... + 107856.

It is an arithmetic number, because the mean of its divisors is an integer number (56654829).

Almost surely, 2^387640196 is an apocalyptic number.

It is an amenable number.

387640196 is a deficient number, since it is larger than the sum of its proper divisors (292217752).

387640196 is a wasteful number, since it uses less digits than its factorization.

387640196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212518 (or 212516 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 387640196 is about 19688.5803449614. The cubic root of 387640196 is about 729.1377797855.

The spelling of 387640196 in words is "three hundred eighty-seven million, six hundred forty thousand, one hundred ninety-six".