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2027281 = 19106699
BaseRepresentation
bin111101110111100010001
310210222220111
413232330101
51004333111
6111241321
723142304
oct7567421
93728814
102027281
111165143
12819241
1355c999
143aab3b
152a0a21
hex1eef11

2027281 has 4 divisors (see below), whose sum is σ = 2134000. Its totient is φ = 1920564.

The previous prime is 2027269. The next prime is 2027297. The reversal of 2027281 is 1827202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2027281 - 29 = 2026769 is a prime.

It is a super-2 number, since 2×20272812 = 8219736505922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2027681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53331 + ... + 53368.

It is an arithmetic number, because the mean of its divisors is an integer number (533500).

22027281 is an apocalyptic number.

It is an amenable number.

2027281 is a deficient number, since it is larger than the sum of its proper divisors (106719).

2027281 is a wasteful number, since it uses less digits than its factorization.

2027281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106718.

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

The square root of 2027281 is about 1423.8261832120. The cubic root of 2027281 is about 126.5623849311.

The spelling of 2027281 in words is "two million, twenty-seven thousand, two hundred eighty-one".

Divisors: 1 19 106699 2027281