27938233 has 4 divisors (see below), whose sum is σ = 28185588. Its totient is φ = 27690880.

The previous prime is 27938221. The next prime is 27938243. The reversal of 27938233 is 33283972.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13860729 + 14077504 = 3723^2 + 3752^2 .

It is a cyclic number.

It is not a de Polignac number, because 27938233 - 2¹³ = 27930041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27938192 and 27938201.

It is not an unprimeable number, because it can be changed into a prime (27938243) 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, 123508 + ... + 123733.

It is an arithmetic number, because the mean of its divisors is an integer number (7046397).

Almost surely, 2^27938233 is an apocalyptic number.

It is an amenable number.

27938233 is a deficient number, since it is larger than the sum of its proper divisors (247355).

27938233 is a wasteful number, since it uses less digits than its factorization.

27938233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247354.

The product of its digits is 54432, while the sum is 37.

The square root of 27938233 is about 5285.6629669323. The cubic root of 27938233 is about 303.4354459043.

It can be divided in two parts, 2793 and 8233, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 27938233 in words is "twenty-seven million, nine hundred thirty-eight thousand, two hundred thirty-three".