6731424 has 180 divisors, whose sum is σ = 23463594. Its totient is φ = 1886976.

The previous prime is 6731407. The next prime is 6731437. The reversal of 6731424 is 4241376.

It can be written as a sum of positive squares in only one way, i.e., 5143824 + 1587600 = 2268^2 + 1260^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 14.

It is an unprimeable number.

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 29 ways as a sum of consecutive naturals, for example, 126982 + ... + 127034.

Almost surely, 2^6731424 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 6731424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11731797).

6731424 is an abundant number, since it is smaller than the sum of its proper divisors (16732170).

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

6731424 is a wasteful number, since it uses less digits than its factorization.

6731424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 65 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 6731424 is about 2594.4987955287. The cubic root of 6731424 is about 188.8146330706.

The spelling of 6731424 in words is "six million, seven hundred thirty-one thousand, four hundred twenty-four".