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28103301090 = 23251916434679
BaseRepresentation
bin11010001011000101…
…100101011111100010
32200112120022121121100
4122023011211133202
5430023421113330
620524355135230
72013266055264
oct321305453742
980476277540
1028103301090
1110a11643077
1255438a4516
13285b448c57
14150859db34
15ae736e060
hex68b1657e2

28103301090 has 48 divisors (see below), whose sum is σ = 76914302400. Its totient is φ = 7099780896.

The previous prime is 28103301077. The next prime is 28103301113. The reversal of 28103301090 is 9010330182.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8215630 + ... + 8219049.

It is an arithmetic number, because the mean of its divisors is an integer number (1602381300).

Almost surely, 228103301090 is an apocalyptic number.

28103301090 is an abundant number, since it is smaller than the sum of its proper divisors (48811001310).

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

28103301090 is a wasteful number, since it uses less digits than its factorization.

28103301090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16434711 (or 16434708 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 28103301090 in words is "twenty-eight billion, one hundred three million, three hundred one thousand, ninety".

Divisors: 1 2 3 5 6 9 10 15 18 19 30 38 45 57 90 95 114 171 190 285 342 570 855 1710 16434679 32869358 49304037 82173395 98608074 147912111 164346790 246520185 295824222 312258901 493040370 624517802 739560555 936776703 1479121110 1561294505 1873553406 2810330109 3122589010 4683883515 5620660218 9367767030 14051650545 28103301090