6000040 has 16 divisors (see below), whose sum is σ = 13500180. Its totient is φ = 2400000.

The previous prime is 6000023. The next prime is 6000041. The reversal of 6000040 is 400006.

It can be written as a sum of positive squares in 2 ways, for example, as 5866084 + 133956 = 2422^2 + 366^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 5999990 and 6000026.

It is not an unprimeable number, because it can be changed into a prime (6000041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74961 + ... + 75040.

Almost surely, 2^6000040 is an apocalyptic number.

It is an amenable number.

6000040 is an abundant number, since it is smaller than the sum of its proper divisors (7500140).

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

6000040 is a wasteful number, since it uses less digits than its factorization.

6000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150012 (or 150008 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 6000040 is about 2449.4979077354. The cubic root of 6000040 is about 181.7124630869.

Adding to 6000040 its reverse (400006), we get a palindrome (6400046).

The spelling of 6000040 in words is "six million, forty", and thus it is an aban number, an eban number, and an uban number.