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23879220 = 22351741571
BaseRepresentation
bin101101100010…
…1111000110100
31122221012010120
41123011320310
522103113340
62211451540
7406653501
oct133057064
948835116
1023879220
111252a8a2
127bb6bb0
134c41021
1432584a8
15216a4d0
hex16c5e34

23879220 has 96 divisors (see below), whose sum is σ = 72648576. Its totient is φ = 5836800.

The previous prime is 23879213. The next prime is 23879231. The reversal of 23879220 is 2297832.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41535 + ... + 42105.

It is an arithmetic number, because the mean of its divisors is an integer number (756756).

Almost surely, 223879220 is an apocalyptic number.

23879220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23879220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36324288).

23879220 is an abundant number, since it is smaller than the sum of its proper divisors (48769356).

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

23879220 is a wasteful number, since it uses less digits than its factorization.

23879220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 23879220 is about 4886.6368803094. The cubic root of 23879220 is about 287.9652253538.

The spelling of 23879220 in words is "twenty-three million, eight hundred seventy-nine thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 41 51 60 68 82 85 102 123 164 170 204 205 246 255 340 410 492 510 571 615 697 820 1020 1142 1230 1394 1713 2091 2284 2460 2788 2855 3426 3485 4182 5710 6852 6970 8364 8565 9707 10455 11420 13940 17130 19414 20910 23411 29121 34260 38828 41820 46822 48535 58242 70233 93644 97070 116484 117055 140466 145605 194140 234110 280932 291210 351165 397987 468220 582420 702330 795974 1193961 1404660 1591948 1989935 2387922 3979870 4775844 5969805 7959740 11939610 23879220