Search a number
-
+
22748 = 2211247
BaseRepresentation
bin101100011011100
31011012112
411203130
51211443
6253152
7123215
oct54334
934175
1022748
1116100
12111b8
13a47b
14840c
156b18
hex58dc

22748 has 18 divisors (see below), whose sum is σ = 44688. Its totient is φ = 10120.

The previous prime is 22741. The next prime is 22751. The reversal of 22748 is 84722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22741) by changing a digit.

22748 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 461 + ... + 507.

222748 is an apocalyptic number.

It is an amenable number.

22748 is a deficient number, since it is larger than the sum of its proper divisors (21940).

22748 is a wasteful number, since it uses less digits than its factorization.

22748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 60 counting only the distinct ones).

The product of its digits is 896, while the sum is 23.

The square root of 22748 is about 150.8244012088. The cubic root of 22748 is about 28.3344251790.

The spelling of 22748 in words is "twenty-two thousand, seven hundred forty-eight".

Divisors: 1 2 4 11 22 44 47 94 121 188 242 484 517 1034 2068 5687 11374 22748