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228315569 = 13712791303
BaseRepresentation
bin11011001101111…
…01000110110001
3120220121122002012
431212331012301
5431422044234
634353332305
75441436026
oct1546750661
9526548065
10228315569
11107972959
1264567095
13383bc691
142247354d
151509e0ce
hexd9bd1b1

228315569 has 8 divisors (see below), whose sum is σ = 230338560. Its totient is φ = 226298016.

The previous prime is 228315551. The next prime is 228315583. The reversal of 228315569 is 965513822.

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

It is a cyclic number.

It is not a de Polignac number, because 228315569 - 220 = 227266993 is a prime.

It is a super-2 number, since 2×2283155692 = 104255998095587522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228315169) 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, 174572 + ... + 175874.

It is an arithmetic number, because the mean of its divisors is an integer number (28792320).

Almost surely, 2228315569 is an apocalyptic number.

It is an amenable number.

228315569 is a deficient number, since it is larger than the sum of its proper divisors (2022991).

228315569 is a wasteful number, since it uses less digits than its factorization.

228315569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719.

The product of its digits is 129600, while the sum is 41.

The square root of 228315569 is about 15110.1147910928. The cubic root of 228315569 is about 611.1931935058.

The spelling of 228315569 in words is "two hundred twenty-eight million, three hundred fifteen thousand, five hundred sixty-nine".

Divisors: 1 137 1279 1303 175223 178511 1666537 228315569