2229940 has 12 divisors (see below), whose sum is σ = 4682916. Its totient is φ = 891968.

The previous prime is 2229917. The next prime is 2229943. The reversal of 2229940 is 499222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1527696 + 702244 = 1236^2 + 838^2 .

It is a d-powerful number, because it can be written as 2 + 2¹⁷ + 2²¹ + 9³ + 9³ + 4⁴ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 2229899 and 2229908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2229943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55729 + ... + 55768.

It is an arithmetic number, because the mean of its divisors is an integer number (390243).

2^2229940 is an apocalyptic number.

2229940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2229940 is an abundant number, since it is smaller than the sum of its proper divisors (2452976).

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

2229940 is a wasteful number, since it uses less digits than its factorization.

2229940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111506 (or 111504 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2229940 is about 1493.2983626858. The cubic root of 2229940 is about 130.6464838789.

The spelling of 2229940 in words is "two million, two hundred twenty-nine thousand, nine hundred forty".