2183240 has 16 divisors (see below), whose sum is σ = 4912380. Its totient is φ = 873280.

The previous prime is 2183231. The next prime is 2183249. The reversal of 2183240 is 423812.

It is an interprime number because it is at equal distance from previous prime (2183231) and next prime (2183249).

It can be written as a sum of positive squares in 2 ways, for example, as 2137444 + 45796 = 1462^2 + 214^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2183249) 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, 27251 + ... + 27330.

2^2183240 is an apocalyptic number.

2183240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2183240 is an abundant number, since it is smaller than the sum of its proper divisors (2729140).

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

2183240 is a wasteful number, since it uses less digits than its factorization.

2183240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54592 (or 54588 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2183240 is about 1477.5791010975. The cubic root of 2183240 is about 129.7280310244.

The spelling of 2183240 in words is "two million, one hundred eighty-three thousand, two hundred forty".