27162243 has 36 divisors (see below), whose sum is σ = 43483480. Its totient is φ = 16754112.

The previous prime is 27162217. The next prime is 27162259. The reversal of 27162243 is 34226172.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 27162243 - 2¹³ = 27154051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27162043) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 460348 + ... + 460406.

Almost surely, 2^27162243 is an apocalyptic number.

27162243 is a deficient number, since it is larger than the sum of its proper divisors (16321237).

27162243 is an equidigital number, since it uses as much as digits as its factorization.

27162243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 79 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 27162243 is about 5211.7408799748. The cubic root of 27162243 is about 300.5997003993.

Multiplying 27162243 by its sum of digits (27), we get a square (733380561 = 27081²).

27162243 divided by its sum of digits (27) gives a square (1006009 = 1003²).

The spelling of 27162243 in words is "twenty-seven million, one hundred sixty-two thousand, two hundred forty-three".