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228613 = 7112969
BaseRepresentation
bin110111110100000101
3102121121011
4313310011
524303423
64522221
71641340
oct676405
9377534
10228613
11146840
12b0371
1380098
145d457
1547b0d
hex37d05

228613 has 8 divisors (see below), whose sum is σ = 285120. Its totient is φ = 178080.

The previous prime is 228611. The next prime is 228617. The reversal of 228613 is 316822.

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

It is not a de Polignac number, because 228613 - 21 = 228611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228611) 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, 1408 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (35640).

2228613 is an apocalyptic number.

It is an amenable number.

228613 is a deficient number, since it is larger than the sum of its proper divisors (56507).

228613 is a wasteful number, since it uses less digits than its factorization.

228613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987.

The product of its digits is 576, while the sum is 22.

The square root of 228613 is about 478.1349181978. The cubic root of 228613 is about 61.1458482642.

Subtracting 228613 from its reverse (316822), we obtain a square (88209 = 2972).

It can be divided in two parts, 228 and 613, that added together give a square (841 = 292).

The spelling of 228613 in words is "two hundred twenty-eight thousand, six hundred thirteen".

Divisors: 1 7 11 77 2969 20783 32659 228613