2187340 has 12 divisors (see below), whose sum is σ = 4593456. Its totient is φ = 874928.

The previous prime is 2187331. The next prime is 2187343. The reversal of 2187340 is 437812.

It is not an unprimeable number, because it can be changed into a prime (2187343) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 54664 + ... + 54703.

It is an arithmetic number, because the mean of its divisors is an integer number (382788).

2^2187340 is an apocalyptic number.

2187340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2187340 is an abundant number, since it is smaller than the sum of its proper divisors (2406116).

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

2187340 is a wasteful number, since it uses less digits than its factorization.

2187340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109376 (or 109374 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2187340 is about 1478.9658549135. The cubic root of 2187340 is about 129.8091875203.

The spelling of 2187340 in words is "two million, one hundred eighty-seven thousand, three hundred forty".