2236005 has 20 divisors (see below), whose sum is σ = 4008972. Its totient is φ = 1192320.

The previous prime is 2236001. The next prime is 2236007. The reversal of 2236005 is 5006322.

It can be written as a sum of positive squares in 2 ways, for example, as 715716 + 1520289 = 846^2 + 1233^2 .

It is not a de Polignac number, because 2236005 - 2² = 2236001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2236001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2356 + ... + 3165.

2^2236005 is an apocalyptic number.

It is an amenable number.

2236005 is a deficient number, since it is larger than the sum of its proper divisors (1772967).

2236005 is an equidigital number, since it uses as much as digits as its factorization.

2236005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538 (or 5529 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2236005 is about 1495.3277232767. The cubic root of 2236005 is about 130.7648209408.

The spelling of 2236005 in words is "two million, two hundred thirty-six thousand, five".