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228025455 = 3576732413
BaseRepresentation
bin11011001011101…
…10010001101111
3120220001220010020
431211312101233
5431333303310
634343213223
75436120150
oct1545662157
9526056106
10228025455
11107794999
1264447213
133831a608
14223d9927
1515043170
hexd97646f

228025455 has 32 divisors (see below), whose sum is σ = 423197184. Its totient is φ = 102681216.

The previous prime is 228025439. The next prime is 228025459. The reversal of 228025455 is 554520822.

It is a happy number.

It is not a de Polignac number, because 228025455 - 24 = 228025439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228025459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9172 + ... + 23241.

It is an arithmetic number, because the mean of its divisors is an integer number (13224912).

Almost surely, 2228025455 is an apocalyptic number.

228025455 is a deficient number, since it is larger than the sum of its proper divisors (195171729).

228025455 is a wasteful number, since it uses less digits than its factorization.

228025455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32495.

The product of its (nonzero) digits is 32000, while the sum is 33.

The square root of 228025455 is about 15100.5117462952. The cubic root of 228025455 is about 610.9342085999.

The spelling of 228025455 in words is "two hundred twenty-eight million, twenty-five thousand, four hundred fifty-five".

Divisors: 1 3 5 7 15 21 35 67 105 201 335 469 1005 1407 2345 7035 32413 97239 162065 226891 486195 680673 1134455 2171671 3403365 6515013 10858355 15201697 32575065 45605091 76008485 228025455