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23228660 = 22571312763
BaseRepresentation
bin101100010011…
…1000011110100
31121201010201202
41120213003310
521421304120
62145512032
7401304020
oct130470364
947633652
1023228660
1112126044
127942618
134a73b90
143129380
15208c875
hex16270f4

23228660 has 48 divisors (see below), whose sum is σ = 60041856. Its totient is φ = 7350912.

The previous prime is 23228657. The next prime is 23228671. The reversal of 23228660 is 6682232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4562 + ... + 8201.

It is an arithmetic number, because the mean of its divisors is an integer number (1250872).

Almost surely, 223228660 is an apocalyptic number.

23228660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23228660 is an abundant number, since it is smaller than the sum of its proper divisors (36813196).

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

23228660 is a wasteful number, since it uses less digits than its factorization.

23228660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12792 (or 12790 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 23228660 is about 4819.6120175798. The cubic root of 23228660 is about 285.3260247689.

The spelling of 23228660 in words is "twenty-three million, two hundred twenty-eight thousand, six hundred sixty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 182 260 364 455 910 1820 12763 25526 51052 63815 89341 127630 165919 178682 255260 331838 357364 446705 663676 829595 893410 1161433 1659190 1786820 2322866 3318380 4645732 5807165 11614330 23228660