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228863349 = 321113213679
BaseRepresentation
bin11011010010000…
…10110101110101
3120221122110111100
431221002311311
5432042111344
634413200313
75446210041
oct1551026565
9527573440
10228863349
11108207470
1264790099
1338551b00
1422577021
151515b569
hexda42d75

228863349 has 36 divisors (see below), whose sum is σ = 390536640. Its totient is φ = 128026080.

The previous prime is 228863347. The next prime is 228863377. The reversal of 228863349 is 943368822.

228863349 is a `hidden beast` number, since 2 + 2 + 8 + 8 + 633 + 4 + 9 = 666.

It is not a de Polignac number, because 228863349 - 21 = 228863347 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228863347) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9892 + ... + 23570.

It is an arithmetic number, because the mean of its divisors is an integer number (10848240).

Almost surely, 2228863349 is an apocalyptic number.

It is an amenable number.

228863349 is a deficient number, since it is larger than the sum of its proper divisors (161673291).

228863349 is a wasteful number, since it uses less digits than its factorization.

228863349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13722 (or 13706 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 228863349 is about 15128.2302005225. The cubic root of 228863349 is about 611.6815994031.

The spelling of 228863349 in words is "two hundred twenty-eight million, eight hundred sixty-three thousand, three hundred forty-nine".

Divisors: 1 3 9 11 13 33 39 99 117 143 169 429 507 1287 1521 1859 5577 13679 16731 41037 123111 150469 177827 451407 533481 1354221 1600443 1956097 2311751 5868291 6935253 17604873 20805759 25429261 76287783 228863349