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2281047 = 31275987
BaseRepresentation
bin1000101100111001010111
311021220000020
420230321113
51040443142
6120520223
725250166
oct10547127
94256006
102281047
11131886a
12920073
1361b342
144353dd
15300cec
hex22ce57

2281047 has 8 divisors (see below), whose sum is σ = 3065856. Its totient is φ = 1508472.

The previous prime is 2281039. The next prime is 2281057. The reversal of 2281047 is 7401822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2281047 - 23 = 2281039 is a prime.

2281047 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281057) 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, 2613 + ... + 3374.

It is an arithmetic number, because the mean of its divisors is an integer number (383232).

22281047 is an apocalyptic number.

2281047 is a deficient number, since it is larger than the sum of its proper divisors (784809).

2281047 is a wasteful number, since it uses less digits than its factorization.

2281047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6117.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2281047 is about 1510.3135436061. The cubic root of 2281047 is about 131.6370308418.

Adding to 2281047 its reverse (7401822), we get a palindrome (9682869).

It can be divided in two parts, 228 and 1047, that added together give a triangular number (1275 = T50).

The spelling of 2281047 in words is "two million, two hundred eighty-one thousand, forty-seven".

Divisors: 1 3 127 381 5987 17961 760349 2281047