6471240 has 32 divisors (see below), whose sum is σ = 19414080. Its totient is φ = 1725632.

The previous prime is 6471239. The next prime is 6471251. The reversal of 6471240 is 421746.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 6471240.

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 7 ways as a sum of consecutive naturals, for example, 26844 + ... + 27083.

It is an arithmetic number, because the mean of its divisors is an integer number (606690).

Almost surely, 2^6471240 is an apocalyptic number.

6471240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6471240 is an abundant number, since it is smaller than the sum of its proper divisors (12942840).

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

6471240 is a wasteful number, since it uses less digits than its factorization.

6471240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53941 (or 53937 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 6471240 is about 2543.8632038693. The cubic root of 6471240 is about 186.3499021119.

Adding to 6471240 its reverse (421746), we get a palindrome (6892986).

The spelling of 6471240 in words is "six million, four hundred seventy-one thousand, two hundred forty".