6729240 has 64 divisors (see below), whose sum is σ = 23074560. Its totient is φ = 1537920.

The previous prime is 6729223. The next prime is 6729241. The reversal of 6729240 is 429276.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 6729198 and 6729207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6729241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3166 + ... + 4845.

It is an arithmetic number, because the mean of its divisors is an integer number (360540).

Almost surely, 2^6729240 is an apocalyptic number.

6729240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6729240 is an abundant number, since it is smaller than the sum of its proper divisors (16345320).

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

6729240 is a wasteful number, since it uses less digits than its factorization.

6729240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032 (or 8028 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 6729240 is about 2594.0778708435. The cubic root of 6729240 is about 188.7942106575.

The spelling of 6729240 in words is "six million, seven hundred twenty-nine thousand, two hundred forty".