2237840 has 40 divisors (see below), whose sum is σ = 5678208. Its totient is φ = 813440.

The previous prime is 2237813. The next prime is 2237861. The reversal of 2237840 is 487322.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392 + ... + 2151.

2^2237840 is an apocalyptic number.

2237840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2237840 is an abundant number, since it is smaller than the sum of its proper divisors (3440368).

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

2237840 is a wasteful number, since it uses less digits than its factorization.

2237840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2237840 is about 1495.9411753141. The cubic root of 2237840 is about 130.8005823153.

The spelling of 2237840 in words is "two million, two hundred thirty-seven thousand, eight hundred forty".