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228079944 = 23328935593
BaseRepresentation
bin11011001100000…
…11100101001000
3120220011122212100
431212003211020
5431342024234
634344313400
75436435051
oct1546034510
9526148770
10228079944
11107821924
1264472860
1338339361
1422411728
1515054399
hexd983948

228079944 has 48 divisors (see below), whose sum is σ = 624674700. Its totient is φ = 75170304.

The previous prime is 228079931. The next prime is 228079961. The reversal of 228079944 is 449970822.

It can be written as a sum of positive squares in 2 ways, for example, as 186322500 + 41757444 = 13650^2 + 6462^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 228079944.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11389 + ... + 24204.

Almost surely, 2228079944 is an apocalyptic number.

228079944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

228079944 is an abundant number, since it is smaller than the sum of its proper divisors (396594756).

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

228079944 is a wasteful number, since it uses less digits than its factorization.

228079944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35694 (or 35687 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 228079944 is about 15102.3158489021. The cubic root of 228079944 is about 610.9828677037.

The spelling of 228079944 in words is "two hundred twenty-eight million, seventy-nine thousand, nine hundred forty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 89 178 267 356 534 712 801 1068 1602 2136 3204 6408 35593 71186 106779 142372 213558 284744 320337 427116 640674 854232 1281348 2562696 3167777 6335554 9503331 12671108 19006662 25342216 28509993 38013324 57019986 76026648 114039972 228079944