2175240 has 32 divisors (see below), whose sum is σ = 6526080. Its totient is φ = 580032.

The previous prime is 2175233. The next prime is 2175247. The reversal of 2175240 is 425712.

It is an interprime number because it is at equal distance from previous prime (2175233) and next prime (2175247).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2175247) 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, 8944 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (203940).

2^2175240 is an apocalyptic number.

2175240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2175240 is an abundant number, since it is smaller than the sum of its proper divisors (4350840).

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

2175240 is a wasteful number, since it uses less digits than its factorization.

2175240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18141 (or 18137 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2175240 is about 1474.8694857512. The cubic root of 2175240 is about 129.5693838669.

It can be divided in two parts, 2175 and 240, that added together give a triangular number (2415 = T₆₉).

The spelling of 2175240 in words is "two million, one hundred seventy-five thousand, two hundred forty".