387211668 has 24 divisors (see below), whose sum is σ = 903835968. Its totient is φ = 129021696.

The previous prime is 387211651. The next prime is 387211687. The reversal of 387211668 is 866112783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42180 + ... + 50532.

It is an arithmetic number, because the mean of its divisors is an integer number (37659832).

Almost surely, 2^387211668 is an apocalyptic number.

It is an amenable number.

387211668 is an abundant number, since it is smaller than the sum of its proper divisors (516624300).

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

387211668 is a wasteful number, since it uses less digits than its factorization.

387211668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12223 (or 12221 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 387211668 is about 19677.6946820505. The cubic root of 387211668 is about 728.8689986097.

The spelling of 387211668 in words is "three hundred eighty-seven million, two hundred eleven thousand, six hundred sixty-eight".