2306138 has 8 divisors (see below), whose sum is σ = 3578580. Its totient is φ = 1113280.

The previous prime is 2306131. The next prime is 2306147. The reversal of 2306138 is 8316032.

It can be written as a sum of positive squares in 2 ways, for example, as 2181529 + 124609 = 1477^2 + 353^2 .

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

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2306131) 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, 19823 + ... + 19938.

2^2306138 is an apocalyptic number.

2306138 is a deficient number, since it is larger than the sum of its proper divisors (1272442).

2306138 is a wasteful number, since it uses less digits than its factorization.

2306138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39792.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2306138 is about 1518.5973791628. The cubic root of 2306138 is about 132.1179310319.

The spelling of 2306138 in words is "two million, three hundred six thousand, one hundred thirty-eight".