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228183929 = 4313938177
BaseRepresentation
bin11011001100111…
…00111101111001
3120220100221111122
431212130331321
5431403341204
634350435025
75440350161
oct1546347571
9526327448
10228183929
11107892a66
1264502a75
133837479c
142243b5a1
15150750be
hexd99cf79

228183929 has 8 divisors (see below), whose sum is σ = 235176480. Its totient is φ = 221268096.

The previous prime is 228183889. The next prime is 228183941. The reversal of 228183929 is 929381822.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-228183929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228183929.

It is not an unprimeable number, because it can be changed into a prime (228183829) 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, 13112 + ... + 25065.

It is an arithmetic number, because the mean of its divisors is an integer number (29397060).

Almost surely, 2228183929 is an apocalyptic number.

It is an amenable number.

228183929 is a deficient number, since it is larger than the sum of its proper divisors (6992551).

228183929 is a wasteful number, since it uses less digits than its factorization.

228183929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38359.

The product of its digits is 124416, while the sum is 44.

The square root of 228183929 is about 15105.7581405238. The cubic root of 228183929 is about 611.0757056206.

The spelling of 228183929 in words is "two hundred twenty-eight million, one hundred eighty-three thousand, nine hundred twenty-nine".

Divisors: 1 43 139 5977 38177 1641611 5306603 228183929