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228053 = 732579
BaseRepresentation
bin110111101011010101
3102120211102
4313223111
524244203
64515445
71636610
oct675325
9376742
10228053
11146381
12abb85
137ca57
145d177
1547888
hex37ad5

228053 has 4 divisors (see below), whose sum is σ = 260640. Its totient is φ = 195468.

The previous prime is 228049. The next prime is 228061. The reversal of 228053 is 350822.

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, and also an emirpimes, since its reverse is a distinct semiprime: 350822 = 2175411.

It is not a de Polignac number, because 228053 - 22 = 228049 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16283 + ... + 16296.

It is an arithmetic number, because the mean of its divisors is an integer number (65160).

2228053 is an apocalyptic number.

It is an amenable number.

228053 is a deficient number, since it is larger than the sum of its proper divisors (32587).

228053 is an equidigital number, since it uses as much as digits as its factorization.

228053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32586.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 228053 is about 477.5489503705. The cubic root of 228053 is about 61.0958807469.

Adding to 228053 its reverse (350822), we get a palindrome (578875).

The spelling of 228053 in words is "two hundred twenty-eight thousand, fifty-three".

Divisors: 1 7 32579 228053