Search a number
-
+
28675511187356 = 221123144719582229
BaseRepresentation
bin1101000010100100010011…
…01010000111011110011100
310202112100111200022201200002
412201102021222013132130
512224304421330443411
6140553203055153432
76016510620263345
oct641221152073634
9122470450281602
1028675511187356
119156241550530
12327160a815878
1313001209ac837
14711c8b6c30cc
1534adb100933b
hex1a1489a8779c

28675511187356 has 48 divisors (see below), whose sum is σ = 57163819184640. Its totient is φ = 12458996742720.

The previous prime is 28675511187353. The next prime is 28675511187397. The reversal of 28675511187356 is 65378111557682.

It is a super-2 number, since 2×286755111873562 (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28675511187292 and 28675511187301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28675511187353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8326751 + ... + 11255478.

It is an arithmetic number, because the mean of its divisors is an integer number (1190912899680).

Almost surely, 228675511187356 is an apocalyptic number.

It is an amenable number.

28675511187356 is a deficient number, since it is larger than the sum of its proper divisors (28488307997284).

28675511187356 is a wasteful number, since it uses less digits than its factorization.

28675511187356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19583714 (or 19583712 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 65.

The spelling of 28675511187356 in words is "twenty-eight trillion, six hundred seventy-five billion, five hundred eleven million, one hundred eighty-seven thousand, three hundred fifty-six".

Divisors: 1 2 4 11 22 23 44 46 92 253 506 1012 1447 2894 5788 15917 31834 33281 63668 66562 133124 366091 732182 1464364 19582229 39164458 78328916 215404519 430809038 450391267 861618076 900782534 1801565068 4954303937 9908607874 19817215748 28335485363 56670970726 113341941452 311690338993 623380677986 651716163349 1246761355972 1303432326698 2606864653396 7168877796839 14337755593678 28675511187356