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2722 = 21361
BaseRepresentation
bin101010100010
310201211
4222202
541342
620334
710636
oct5242
93654
102722
112055
1216aa
131315
14dc6
15c17
hexaa2

2722 has 4 divisors (see below), whose sum is σ = 4086. Its totient is φ = 1360.

The previous prime is 2719. The next prime is 2729. The reversal of 2722 is 2272.

Adding to 2722 its reverse (2272), we get a palindrome (4994).

It can be divided in two parts, 27 and 22, that added together give a square (49 = 72).

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

It can be written as a sum of positive squares in only one way, i.e., 2601 + 121 = 51^2 + 11^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is a nialpdrome in base 14 and base 16.

It is not an unprimeable number, because it can be changed into a prime (2729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 679 + ... + 682.

2722 is a deficient number, since it is larger than the sum of its proper divisors (1364).

2722 is a wasteful number, since it uses less digits than its factorization.

2722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363.

The product of its digits is 56, while the sum is 13.

The square root of 2722 is about 52.1727898430. The cubic root of 2722 is about 13.9624845948.

The spelling of 2722 in words is "two thousand, seven hundred twenty-two", and thus it is an iban number.

Divisors: 1 2 1361 2722