2271040 has 56 divisors (see below), whose sum is σ = 5559552. Its totient is φ = 883200.

The previous prime is 2271037. The next prime is 2271041. The reversal of 2271040 is 401722.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271041) 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, 14965 + ... + 15115.

2^2271040 is an apocalyptic number.

2271040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2271040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2779776).

2271040 is an abundant number, since it is smaller than the sum of its proper divisors (3288512).

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

2271040 is a wasteful number, since it uses less digits than its factorization.

2271040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2271040 is about 1506.9970139320. The cubic root of 2271040 is about 131.4442505374. Note that the first 3 decimals are identical.

Adding to 2271040 its reverse (401722), we get a palindrome (2672762).

The spelling of 2271040 in words is "two million, two hundred seventy-one thousand, forty".