2143272 has 16 divisors (see below), whose sum is σ = 5358240.
Its totient is φ = 714416.
The previous prime is 2143261. The next prime is 2143279. The reversal of 2143272 is 2723412.
Adding to 2143272 its reverse (2723412), we get a palindrome (4866684).
It can be divided in two parts, 2143 and 272, that added together give a triangular number (2415 = T69).
It is a super-2 number, since 2×21432722 = 9187229731968, which contains 22 as substring.
It is an alternating number because its digits alternate between even and odd.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2143279) 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, 44628 + ... + 44675.
It is an arithmetic number, because the mean of its divisors is an integer number (334890).
22143272 is an apocalyptic number.
It is an amenable number.
2143272 is an abundant number, since it is smaller than the sum of its proper divisors (3214968).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2143272 is a wasteful number, since it uses less digits than its factorization.
2143272 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 89312 (or 89308 counting only the distinct ones).
The product of its digits is 672, while the sum is 21.
The square root of 2143272 is about 1463.9918032557.
The cubic root of 2143272 is about 128.9315182459.
The spelling of 2143272 in words is "two million, one hundred forty-three thousand, two hundred seventy-two".