2187040 has 24 divisors (see below), whose sum is σ = 5167260. Its totient is φ = 874752.

The previous prime is 2187037. The next prime is 2187043. The reversal of 2187040 is 407812.

It is an interprime number because it is at equal distance from previous prime (2187037) and next prime (2187043).

It can be written as a sum of positive squares in 2 ways, for example, as 2178576 + 8464 = 1476^2 + 92^2 .

It is not an unprimeable number, because it can be changed into a prime (2187043) 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, 6675 + ... + 6994.

2^2187040 is an apocalyptic number.

2187040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2187040 is an abundant number, since it is smaller than the sum of its proper divisors (2980220).

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

2187040 is a wasteful number, since it uses less digits than its factorization.

2187040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13684 (or 13676 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 2187040 is about 1478.8644292159. The cubic root of 2187040 is about 129.8032526806.

The spelling of 2187040 in words is "two million, one hundred eighty-seven thousand, forty".