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22744 = 232843
BaseRepresentation
bin101100011011000
31011012101
411203120
51211434
6253144
7123211
oct54330
934171
1022744
11160a7
12111b4
13a477
148408
156b14
hex58d8

22744 has 8 divisors (see below), whose sum is σ = 42660. Its totient is φ = 11368.

The previous prime is 22741. The next prime is 22751. The reversal of 22744 is 44722.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22741) 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 as a sum of consecutive naturals, namely, 1414 + ... + 1429.

222744 is an apocalyptic number.

It is an amenable number.

22744 is a deficient number, since it is larger than the sum of its proper divisors (19916).

22744 is a wasteful number, since it uses less digits than its factorization.

22744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849 (or 2845 counting only the distinct ones).

The product of its digits is 448, while the sum is 19.

The square root of 22744 is about 150.8111401721. The cubic root of 22744 is about 28.3327643100.

It can be divided in two parts, 2274 and 4, that added together give a triangular number (2278 = T67).

The spelling of 22744 in words is "twenty-two thousand, seven hundred forty-four", and thus it is an iban number.

Divisors: 1 2 4 8 2843 5686 11372 22744