2605138 has 8 divisors (see below), whose sum is σ = 3936240. Its totient is φ = 1293060.

The previous prime is 2605103. The next prime is 2605139. The reversal of 2605138 is 8315062.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2605139) 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, 4408 + ... + 4963.

It is an arithmetic number, because the mean of its divisors is an integer number (492030).

2^2605138 is an apocalyptic number.

2605138 is a deficient number, since it is larger than the sum of its proper divisors (1331102).

2605138 is a wasteful number, since it uses less digits than its factorization.

2605138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9512.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2605138 is about 1614.0439894873. The cubic root of 2605138 is about 137.5974053617.

The spelling of 2605138 in words is "two million, six hundred five thousand, one hundred thirty-eight".