2236840 has 16 divisors (see below), whose sum is σ = 5032980. Its totient is φ = 894720.

The previous prime is 2236831. The next prime is 2236873. The reversal of 2236840 is 486322.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2090916 + 145924 = 1446^2 + 382^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27921 + ... + 28000.

2^2236840 is an apocalyptic number.

2236840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2236840 is an abundant number, since it is smaller than the sum of its proper divisors (2796140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2236840 is a wasteful number, since it uses less digits than its factorization.

2236840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55932 (or 55928 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2236840 is about 1495.6069002248. The cubic root of 2236840 is about 130.7810962528.

The spelling of 2236840 in words is "two million, two hundred thirty-six thousand, eight hundred forty".