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228583120 = 24513812069
BaseRepresentation
bin11011001111111…
…10011011010000
3120221010020002111
431213332123100
5432004124440
634403155104
75443632043
oct1547763320
9527106074
10228583120
11108035977
1264675a94
13384843ac
1422502c5a
15151034ea
hexd9fe6d0

228583120 has 40 divisors (see below), whose sum is σ = 532097640. Its totient is φ = 91322880.

The previous prime is 228583097. The next prime is 228583123. The reversal of 228583120 is 21385822.

It can be written as a sum of positive squares in 4 ways, for example, as 2742336 + 225840784 = 1656^2 + 15028^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228583123) 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 7 ways as a sum of consecutive naturals, for example, 109446 + ... + 111514.

It is an arithmetic number, because the mean of its divisors is an integer number (13302441).

Almost surely, 2228583120 is an apocalyptic number.

228583120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228583120 is an abundant number, since it is smaller than the sum of its proper divisors (303514520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228583120 is a wasteful number, since it uses less digits than its factorization.

228583120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463 (or 3457 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 228583120 is about 15118.9655730807. The cubic root of 228583120 is about 611.4318420232.

The spelling of 228583120 in words is "two hundred twenty-eight million, five hundred eighty-three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1381 2069 2762 4138 5524 6905 8276 10345 11048 13810 16552 20690 22096 27620 33104 41380 55240 82760 110480 165520 2857289 5714578 11429156 14286445 22858312 28572890 45716624 57145780 114291560 228583120