2226240 has 84 divisors (see below), whose sum is σ = 7667244. Its totient is φ = 592896.

The previous prime is 2226229. The next prime is 2226241. The reversal of 2226240 is 426222.

It is a happy number.

2226240 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 419904 + 1806336 = 648^2 + 1344^2 .

It is a super-2 number, since 2×2226240² = 9912289075200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 2⁸ + 2¹⁴ + 2¹⁶ + 6⁶ + 2²¹ + 4⁴ + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2226241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2494 + ... + 3266.

2^2226240 is an apocalyptic number.

2226240 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 2226240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3833622).

2226240 is an abundant number, since it is smaller than the sum of its proper divisors (5441004).

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

2226240 is a wasteful number, since it uses less digits than its factorization.

2226240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2226240 is about 1492.0589800675. The cubic root of 2226240 is about 130.5741860306.

Subtracting from 2226240 its sum of digits (18), we obtain a palindrome (2226222).

It can be divided in two parts, 222 and 6240, that multiplied together give a triangular number (1385280 = T₁₆₆₄).

The spelling of 2226240 in words is "two million, two hundred twenty-six thousand, two hundred forty".