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228267885 = 35139109481
BaseRepresentation
bin11011001101100…
…01011101101101
3120220112012200010
431212301131231
5431414033020
634352323433
75441150016
oct1546613555
9526465603
10228267885
1110794004a
1264543579
13383a3a71
142246000d
151508ede0
hexd9b176d

228267885 has 16 divisors (see below), whose sum is σ = 367859520. Its totient is φ = 120865920.

The previous prime is 228267877. The next prime is 228267899. The reversal of 228267885 is 588762822.

It is not a de Polignac number, because 228267885 - 23 = 228267877 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 52656 + ... + 56825.

It is an arithmetic number, because the mean of its divisors is an integer number (22991220).

Almost surely, 2228267885 is an apocalyptic number.

It is an amenable number.

228267885 is a deficient number, since it is larger than the sum of its proper divisors (139591635).

228267885 is a wasteful number, since it uses less digits than its factorization.

228267885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109628.

The product of its digits is 860160, while the sum is 48.

The square root of 228267885 is about 15108.5368252521. The cubic root of 228267885 is about 611.1506410487.

The spelling of 228267885 in words is "two hundred twenty-eight million, two hundred sixty-seven thousand, eight hundred eighty-five".

Divisors: 1 3 5 15 139 417 695 2085 109481 328443 547405 1642215 15217859 45653577 76089295 228267885