6823728 has 30 divisors (see below), whose sum is σ = 19097364. Its totient is φ = 2274528.

The previous prime is 6823721. The next prime is 6823757. The reversal of 6823728 is 8273286.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6823692 and 6823701.

It is not an unprimeable number, because it can be changed into a prime (6823721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23550 + ... + 23837.

Almost surely, 2^6823728 is an apocalyptic number.

It is an amenable number.

6823728 is an abundant number, since it is smaller than the sum of its proper divisors (12273636).

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

6823728 is a wasteful number, since it uses less digits than its factorization.

6823728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47401 (or 47392 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 6823728 is about 2612.2266364158. The cubic root of 6823728 is about 189.6737522187.

It can be divided in two parts, 68237 and 28, that added together give a triangular number (68265 = T₃₆₉).

The spelling of 6823728 in words is "six million, eight hundred twenty-three thousand, seven hundred twenty-eight".