2214440 has 64 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 808192.

The previous prime is 2214383. The next prime is 2214473. The reversal of 2214440 is 444122.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26639 + ... + 26721.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

2^2214440 is an apocalyptic number.

2214440 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 2214440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2721600).

2214440 is an abundant number, since it is smaller than the sum of its proper divisors (3228760).

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

2214440 is a wasteful number, since it uses less digits than its factorization.

2214440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2214440 is about 1488.0994590416. The cubic root of 2214440 is about 130.3430780204.

Adding to 2214440 its reverse (444122), we get a palindrome (2658562).

The spelling of 2214440 in words is "two million, two hundred fourteen thousand, four hundred forty".