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28533876390 = 23251378872609
BaseRepresentation
bin11010100100110000…
…000110011010100110
32201122120112002212200
4122210300012122212
5431414133021030
621035215555330
72030044642665
oct324460063246
981576462780
1028533876390
11111126a1728
125643b2bb46
1328c9704336
141549842ddc
15b20071d60
hex6a4c066a6

28533876390 has 96 divisors (see below), whose sum is σ = 74842522560. Its totient is φ = 7542085632.

The previous prime is 28533876379. The next prime is 28533876409. The reversal of 28533876390 is 9367833582.

28533876390 is a `hidden beast` number, since 2 + 8 + 533 + 8 + 76 + 39 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10935406 + ... + 10938014.

It is an arithmetic number, because the mean of its divisors is an integer number (779609610).

Almost surely, 228533876390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28533876390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37421261280).

28533876390 is an abundant number, since it is smaller than the sum of its proper divisors (46308646170).

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

28533876390 is a wasteful number, since it uses less digits than its factorization.

28533876390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646 (or 3643 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 28533876390 in words is "twenty-eight billion, five hundred thirty-three million, eight hundred seventy-six thousand, three hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 137 274 411 685 822 887 1233 1370 1774 2055 2466 2609 2661 4110 4435 5218 5322 6165 7827 7983 8870 12330 13045 13305 15654 15966 23481 26090 26610 39135 39915 46962 78270 79830 117405 121519 234810 243038 357433 364557 607595 714866 729114 1072299 1093671 1215190 1787165 1822785 2144598 2187342 2314183 3216897 3574330 3645570 4628366 5361495 5468355 6433794 6942549 10722990 10936710 11570915 13885098 16084485 20827647 23141830 32168970 34712745 41655294 69425490 104138235 208276470 317043071 634086142 951129213 1585215355 1902258426 2853387639 3170430710 4755646065 5706775278 9511292130 14266938195 28533876390