6135440 has 40 divisors (see below), whose sum is σ = 14368128. Its totient is φ = 2436480.

The previous prime is 6135433. The next prime is 6135463. The reversal of 6135440 is 445316.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21539 + ... + 21821.

Almost surely, 2^6135440 is an apocalyptic number.

It is an amenable number.

6135440 is an abundant number, since it is smaller than the sum of its proper divisors (8232688).

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

6135440 is a wasteful number, since it uses less digits than its factorization.

6135440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 6135440 is about 2476.9820346543. The cubic root of 6135440 is about 183.0691806481.

The spelling of 6135440 in words is "six million, one hundred thirty-five thousand, four hundred forty".