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228088949 = 11171219727
BaseRepresentation
bin11011001100001…
…01110001110101
3120220012010012212
431212011301311
5431342321244
634344423205
75436503234
oct1546056165
9526163185
10228088949
11107828670
1264477b05
133834049a
1422414b1b
1515056d9e
hexd985c75

228088949 has 8 divisors (see below), whose sum is σ = 263461248. Its totient is φ = 195156160.

The previous prime is 228088937. The next prime is 228088951. The reversal of 228088949 is 949880822.

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 228088949 - 216 = 228023413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228088897 and 228088906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228088969) 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, 609677 + ... + 610050.

It is an arithmetic number, because the mean of its divisors is an integer number (32932656).

Almost surely, 2228088949 is an apocalyptic number.

It is an amenable number.

228088949 is a deficient number, since it is larger than the sum of its proper divisors (35372299).

228088949 is a wasteful number, since it uses less digits than its factorization.

228088949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219755.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 228088949 is about 15102.6139790435. The cubic root of 228088949 is about 610.9909084930.

The spelling of 228088949 in words is "two hundred twenty-eight million, eighty-eight thousand, nine hundred forty-nine".

Divisors: 1 11 17 187 1219727 13416997 20735359 228088949