6138740 has 24 divisors (see below), whose sum is σ = 12966912. Its totient is φ = 2441120.

The previous prime is 6138739. The next prime is 6138779. The reversal of 6138740 is 478316.

It is a congruent number.

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, 3017 + ... + 4623.

It is an arithmetic number, because the mean of its divisors is an integer number (540288).

Almost surely, 2^6138740 is an apocalyptic number.

It is an amenable number.

6138740 is an abundant number, since it is smaller than the sum of its proper divisors (6828172).

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

6138740 is a wasteful number, since it uses less digits than its factorization.

6138740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 6138740 is about 2477.6480783194. The cubic root of 6138740 is about 183.1019965514.

The spelling of 6138740 in words is "six million, one hundred thirty-eight thousand, seven hundred forty".