2738239 has 4 divisors (see below), whose sum is σ = 3129424. Its totient is φ = 2347056.

The previous prime is 2738231. The next prime is 2738243. The reversal of 2738239 is 9328372.

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

It is a cyclic number.

It is not a de Polignac number, because 2738239 - 2³ = 2738231 is a prime.

It is a super-2 number, since 2×2738239² = 14995905642242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2738231) 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, 195582 + ... + 195595.

It is an arithmetic number, because the mean of its divisors is an integer number (782356).

2^2738239 is an apocalyptic number.

2738239 is a deficient number, since it is larger than the sum of its proper divisors (391185).

2738239 is an equidigital number, since it uses as much as digits as its factorization.

2738239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391184.

The product of its digits is 18144, while the sum is 34.

The square root of 2738239 is about 1654.7625207262. The cubic root of 2738239 is about 139.9019551628.

The spelling of 2738239 in words is "two million, seven hundred thirty-eight thousand, two hundred thirty-nine".