6438180 has 48 divisors (see below), whose sum is σ = 20603520. Its totient is φ = 1471488.

The previous prime is 6438167. The next prime is 6438191. The reversal of 6438180 is 818346.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7245 + ... + 8084.

It is an arithmetic number, because the mean of its divisors is an integer number (429240).

Almost surely, 2^6438180 is an apocalyptic number.

6438180 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6438180 is an abundant number, since it is smaller than the sum of its proper divisors (14165340).

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

6438180 is a wasteful number, since it uses less digits than its factorization.

6438180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15348 (or 15346 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 6438180 is about 2537.3568925163. The cubic root of 6438180 is about 186.0320213109.

The spelling of 6438180 in words is "six million, four hundred thirty-eight thousand, one hundred eighty".