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28108850 = 2527311149
BaseRepresentation
bin110101100111…
…0100000110010
31221220002002112
41223032200302
524143440400
62442245322
7460631000
oct153164062
957802075
1028108850
1114959660
1294b6842
135a92273
143a39a70
152703835
hex1ace832

28108850 has 96 divisors (see below), whose sum is σ = 66960000. Its totient is φ = 8702400.

The previous prime is 28108841. The next prime is 28108853. The reversal of 28108850 is 5880182.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28108853) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188576 + ... + 188724.

It is an arithmetic number, because the mean of its divisors is an integer number (697500).

Almost surely, 228108850 is an apocalyptic number.

28108850 is an abundant number, since it is smaller than the sum of its proper divisors (38851150).

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

28108850 is a wasteful number, since it uses less digits than its factorization.

28108850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 28108850 is about 5301.7780036512. The cubic root of 28108850 is about 304.0518797077.

The spelling of 28108850 in words is "twenty-eight million, one hundred eight thousand, eight hundred fifty".

Divisors: 1 2 5 7 10 11 14 22 25 35 49 50 55 70 77 98 110 149 154 175 245 275 298 343 350 385 490 539 550 686 745 770 1043 1078 1225 1490 1639 1715 1925 2086 2450 2695 3278 3430 3725 3773 3850 5215 5390 7301 7450 7546 8195 8575 10430 11473 13475 14602 16390 17150 18865 22946 26075 26950 36505 37730 40975 51107 52150 57365 73010 80311 81950 94325 102214 114730 160622 182525 188650 255535 286825 365050 401555 511070 562177 573650 803110 1124354 1277675 2007775 2555350 2810885 4015550 5621770 14054425 28108850