6474240 has 120 divisors (see below), whose sum is σ = 22501908. Its totient is φ = 1720320.

The previous prime is 6474239. The next prime is 6474241. The reversal of 6474240 is 424746.

It is an interprime number because it is at equal distance from previous prime (6474239) and next prime (6474241).

It can be written as a sum of positive squares in 2 ways, for example, as 6471936 + 2304 = 2544^2 + 48^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6474241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22900 + ... + 23180.

Almost surely, 2^6474240 is an apocalyptic number.

6474240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6474240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11250954).

6474240 is an abundant number, since it is smaller than the sum of its proper divisors (16027668).

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

6474240 is a wasteful number, since it uses less digits than its factorization.

6474240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 6474240 is about 2544.4527898941. The cubic root of 6474240 is about 186.3786942928.

Adding to 6474240 its reverse (424746), we get a palindrome (6898986).

The spelling of 6474240 in words is "six million, four hundred seventy-four thousand, two hundred forty".