6147440 has 80 divisors (see below), whose sum is σ = 16123968. Its totient is φ = 2162688.

The previous prime is 6147419. The next prime is 6147443. The reversal of 6147440 is 447416.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6147443) by changing a digit.

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, 23792 + ... + 24048.

Almost surely, 2^6147440 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 6147440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8061984).

6147440 is an abundant number, since it is smaller than the sum of its proper divisors (9976528).

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

6147440 is a wasteful number, since it uses less digits than its factorization.

6147440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 6147440 is about 2479.4031539869. The cubic root of 6147440 is about 183.1884548702.

The spelling of 6147440 in words is "six million, one hundred forty-seven thousand, four hundred forty".