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28611735086 = 21119234217069
BaseRepresentation
bin11010101001011001…
…000110111000101110
32201212000000201221002
4122221121012320232
5432044101010321
621051040440302
72032011510164
oct325131067056
981760021832
1028611735086
1111152640060
125666019092
13290c894b7c
141555d0d234
15b26d0120b
hex6a9646e2e

28611735086 has 64 divisors (see below), whose sum is σ = 51555571200. Its totient is φ = 11755497600.

The previous prime is 28611735083. The next prime is 28611735133. The reversal of 28611735086 is 68053711682.

It is a self number, because there is not a number n which added to its sum of digits gives 28611735086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28611735083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4043960 + ... + 4051028.

It is an arithmetic number, because the mean of its divisors is an integer number (805555800).

Almost surely, 228611735086 is an apocalyptic number.

28611735086 is a deficient number, since it is larger than the sum of its proper divisors (22943836114).

28611735086 is a wasteful number, since it uses less digits than its factorization.

28611735086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7545.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 28611735086 in words is "twenty-eight billion, six hundred eleven million, seven hundred thirty-five thousand, eighty-six".

Divisors: 1 2 11 19 22 23 38 46 209 253 418 421 437 506 842 874 4631 4807 7069 7999 9262 9614 9683 14138 15998 19366 77759 87989 106513 134311 155518 162587 175978 183977 213026 268622 325174 367954 1477421 1788457 2023747 2954842 2976049 3089153 3576914 4047494 5952098 6178306 32736539 33980683 56544931 65473078 67961366 68449127 113089862 136898254 621994241 752940397 1243988482 1300533413 1505880794 2601066826 14305867543 28611735086