6729432 has 64 divisors (see below), whose sum is σ = 17902080. Its totient is φ = 2103552.

The previous prime is 6729427. The next prime is 6729461. The reversal of 6729432 is 2349276.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 6729393 and 6729402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40213 + ... + 40379.

It is an arithmetic number, because the mean of its divisors is an integer number (279720).

Almost surely, 2^6729432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6729432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8951040).

6729432 is an abundant number, since it is smaller than the sum of its proper divisors (11172648).

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

6729432 is a wasteful number, since it uses less digits than its factorization.

6729432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 268 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 6729432 is about 2594.1148779497. The cubic root of 6729432 is about 188.7960062116.

The spelling of 6729432 in words is "six million, seven hundred twenty-nine thousand, four hundred thirty-two".