2237440 has 88 divisors (see below), whose sum is σ = 5895360. Its totient is φ = 811008.

The previous prime is 2237429. The next prime is 2237447. The reversal of 2237440 is 447322.

It is a super-2 number, since 2×2237440² = 10012275507200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2237447) 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, 97269 + ... + 97291.

2^2237440 is an apocalyptic number.

2237440 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 2237440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2947680).

2237440 is an abundant number, since it is smaller than the sum of its proper divisors (3657920).

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

2237440 is a wasteful number, since it uses less digits than its factorization.

2237440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 2237440 is about 1495.8074742426. The cubic root of 2237440 is about 130.7927885870.

The spelling of 2237440 in words is "two million, two hundred thirty-seven thousand, four hundred forty".