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2144983 = 3169193
BaseRepresentation
bin1000001011101011010111
311000222100211
420023223113
51022114413
6113550251
724142411
oct10135327
94028324
102144983
111235615
12875387
135a1429
143db9b1
152c583d
hex20bad7

2144983 has 4 divisors (see below), whose sum is σ = 2214208. Its totient is φ = 2075760.

The previous prime is 2144977. The next prime is 2144993. The reversal of 2144983 is 3894412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2144983 - 25 = 2144951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 69193 = 2144983 / (2 + 1 + 4 + 4 + 9 + 8 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144953) 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, 34566 + ... + 34627.

It is an arithmetic number, because the mean of its divisors is an integer number (553552).

22144983 is an apocalyptic number.

2144983 is a deficient number, since it is larger than the sum of its proper divisors (69225).

2144983 is an equidigital number, since it uses as much as digits as its factorization.

2144983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69224.

The product of its digits is 6912, while the sum is 31.

The square root of 2144983 is about 1464.5760478719. The cubic root of 2144983 is about 128.9658183177.

The spelling of 2144983 in words is "two million, one hundred forty-four thousand, nine hundred eighty-three".

Divisors: 1 31 69193 2144983