6728988 has 24 divisors (see below), whose sum is σ = 17944192. Its totient is φ = 1922544.

The previous prime is 6728977. The next prime is 6729007. The reversal of 6728988 is 8898276.

It is a happy number.

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, 39970 + ... + 40137.

Almost surely, 2^6728988 is an apocalyptic number.

It is an amenable number.

6728988 is an abundant number, since it is smaller than the sum of its proper divisors (11215204).

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

6728988 is a wasteful number, since it uses less digits than its factorization.

6728988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80121 (or 80119 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 6728988 is about 2594.0292982154. The cubic root of 6728988 is about 188.7918539409.

The spelling of 6728988 in words is "six million, seven hundred twenty-eight thousand, nine hundred eighty-eight".