387494660 has 48 divisors (see below), whose sum is σ = 947552256. Its totient is φ = 130346112.

The previous prime is 387494621. The next prime is 387494663. The reversal of 387494660 is 66494783.

It is a super-2 number, since 2×387494660² = 300304223057031200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (387494663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18692 + ... + 33531.

It is an arithmetic number, because the mean of its divisors is an integer number (19740672).

Almost surely, 2^387494660 is an apocalyptic number.

It is an amenable number.

387494660 is an abundant number, since it is smaller than the sum of its proper divisors (560057596).

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

387494660 is a wasteful number, since it uses less digits than its factorization.

387494660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52292 (or 52290 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 387494660 is about 19684.8840484266. The cubic root of 387494660 is about 729.0465189721.

The spelling of 387494660 in words is "three hundred eighty-seven million, four hundred ninety-four thousand, six hundred sixty".