2230640 has 20 divisors (see below), whose sum is σ = 5186424. Its totient is φ = 892224.

The previous prime is 2230639. The next prime is 2230643. The reversal of 2230640 is 460322.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2230643) by changing a digit.

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, 13862 + ... + 14021.

2^2230640 is an apocalyptic number.

2230640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2230640 is an abundant number, since it is smaller than the sum of its proper divisors (2955784).

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

2230640 is a wasteful number, since it uses less digits than its factorization.

2230640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27896 (or 27890 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2230640 is about 1493.5327247838. The cubic root of 2230640 is about 130.6601528522.

Adding to 2230640 its reverse (460322), we get a palindrome (2690962).

It can be divided in two parts, 2 and 230640, that multiplied together give a triangular number (461280 = T₉₆₀).

The spelling of 2230640 in words is "two million, two hundred thirty thousand, six hundred forty".