2203440 has 40 divisors (see below), whose sum is σ = 6831408. Its totient is φ = 587520.

The previous prime is 2203433. The next prime is 2203441. The reversal of 2203440 is 443022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-4 number, since 4×2203440⁴ (a number of 26 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4351 + ... + 4830.

2^2203440 is an apocalyptic number.

2203440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2203440 is an abundant number, since it is smaller than the sum of its proper divisors (4627968).

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

2203440 is a wasteful number, since it uses less digits than its factorization.

2203440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9197 (or 9191 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 2203440 is about 1484.3988682292. The cubic root of 2203440 is about 130.1268977863.

Adding to 2203440 its reverse (443022), we get a palindrome (2646462).

The spelling of 2203440 in words is "two million, two hundred three thousand, four hundred forty".