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23681628680 = 235472268013
BaseRepresentation
bin10110000011100010…
…001111101000001000
32021010102011101100112
4112003202033220020
5341444444104210
614513523253452
71465565344133
oct260342175010
967112141315
1023681628680
11a052731156
12470ab1a288
132305368548
14120924321a
159390a3d05
hex58388fa08

23681628680 has 48 divisors (see below), whose sum is σ = 54441683820. Its totient is φ = 9271071104.

The previous prime is 23681628599. The next prime is 23681628701. The reversal of 23681628680 is 8682618632.

It can be written as a sum of positive squares in 2 ways, for example, as 23678438884 + 3189796 = 153878^2 + 1786^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45647 + ... + 222366.

Almost surely, 223681628680 is an apocalyptic number.

23681628680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23681628680 is an abundant number, since it is smaller than the sum of its proper divisors (30760055140).

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

23681628680 is a wasteful number, since it uses less digits than its factorization.

23681628680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268118 (or 268067 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 23681628680 in words is "twenty-three billion, six hundred eighty-one million, six hundred twenty-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 47 94 188 235 376 470 940 1880 2209 4418 8836 11045 17672 22090 44180 88360 268013 536026 1072052 1340065 2144104 2680130 5360260 10720520 12596611 25193222 50386444 62983055 100772888 125966110 251932220 503864440 592040717 1184081434 2368162868 2960203585 4736325736 5920407170 11840814340 23681628680