6140040 has 64 divisors (see below), whose sum is σ = 19396800. Its totient is φ = 1550592.

The previous prime is 6140023. The next prime is 6140041. The reversal of 6140040 is 400416.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (6140041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934 + ... + 3626.

It is an arithmetic number, because the mean of its divisors is an integer number (303075).

Almost surely, 2^6140040 is an apocalyptic number.

6140040 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 6140040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9698400).

6140040 is an abundant number, since it is smaller than the sum of its proper divisors (13256760).

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

6140040 is a wasteful number, since it uses less digits than its factorization.

6140040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726 (or 2722 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 6140040 is about 2477.9104100028. The cubic root of 6140040 is about 183.1149207994.

Adding to 6140040 its reverse (400416), we get a palindrome (6540456).

The spelling of 6140040 in words is "six million, one hundred forty thousand, forty".