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228744824 = 23711371339
BaseRepresentation
bin11011010001001…
…01111001111000
3120221102102220112
431220211321320
5432024313244
634410443452
75445204350
oct1550457170
9527372815
10228744824
11108136410
1264733588
133850cb89
1422545b60
151513639e
hexda25e78

228744824 has 32 divisors (see below), whose sum is σ = 534729600. Its totient is φ = 89121120.

The previous prime is 228744799. The next prime is 228744827. The reversal of 228744824 is 428447822.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228744827) 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, 185054 + ... + 186285.

It is an arithmetic number, because the mean of its divisors is an integer number (16710300).

Almost surely, 2228744824 is an apocalyptic number.

It is an amenable number.

228744824 is an abundant number, since it is smaller than the sum of its proper divisors (305984776).

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

228744824 is a wasteful number, since it uses less digits than its factorization.

228744824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371363 (or 371359 counting only the distinct ones).

The product of its digits is 229376, while the sum is 41.

The square root of 228744824 is about 15124.3123480045. The cubic root of 228744824 is about 611.5759875013.

The spelling of 228744824 in words is "two hundred twenty-eight million, seven hundred forty-four thousand, eight hundred twenty-four".

Divisors: 1 2 4 7 8 11 14 22 28 44 56 77 88 154 308 616 371339 742678 1485356 2599373 2970712 4084729 5198746 8169458 10397492 16338916 20794984 28593103 32677832 57186206 114372412 228744824