2731838 has 4 divisors (see below), whose sum is σ = 4097760. Its totient is φ = 1365918.

The previous prime is 2731837. The next prime is 2731847. The reversal of 2731838 is 8381372.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682958 + ... + 682961.

It is an arithmetic number, because the mean of its divisors is an integer number (1024440).

2^2731838 is an apocalyptic number.

2731838 is a deficient number, since it is larger than the sum of its proper divisors (1365922).

2731838 is a wasteful number, since it uses less digits than its factorization.

2731838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365921.

The product of its digits is 8064, while the sum is 32.

The square root of 2731838 is about 1652.8272747024. The cubic root of 2731838 is about 139.7928569290.

The spelling of 2731838 in words is "two million, seven hundred thirty-one thousand, eight hundred thirty-eight".