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228475653 = 3721151563
BaseRepresentation
bin11011001111001…
…00001100000101
3120220220202200020
431213210030011
5431442210103
634401005353
75443003530
oct1547441405
9526822606
10228475653
11107a7215a
1264623859
13384474c3
14224b5a17
15150d1753
hexd9e4305

228475653 has 16 divisors (see below), whose sum is σ = 349810176. Its totient is φ = 129936240.

The previous prime is 228475651. The next prime is 228475669. The reversal of 228475653 is 356574822.

It is not a de Polignac number, because 228475653 - 21 = 228475651 is a prime.

It is a super-2 number, since 2×2284756532 = 104402248027552818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228475651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21351 + ... + 30212.

It is an arithmetic number, because the mean of its divisors is an integer number (21863136).

Almost surely, 2228475653 is an apocalyptic number.

It is an amenable number.

228475653 is a deficient number, since it is larger than the sum of its proper divisors (121334523).

228475653 is a wasteful number, since it uses less digits than its factorization.

228475653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51784.

The product of its digits is 403200, while the sum is 42.

The square root of 228475653 is about 15115.4111091958. The cubic root of 228475653 is about 611.3360066498.

The spelling of 228475653 in words is "two hundred twenty-eight million, four hundred seventy-five thousand, six hundred fifty-three".

Divisors: 1 3 7 21 211 633 1477 4431 51563 154689 360941 1082823 10879793 32639379 76158551 228475653