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23788940 = 2257367463
BaseRepresentation
bin101101010111…
…1110110001100
31122202121021212
41122233312030
522042221230
62205513552
7406126340
oct132576614
948677255
1023788940
1112478a8a
127b728b8
134c0bbc6
143233620
15214d895
hex16afd8c

23788940 has 48 divisors (see below), whose sum is σ = 57372672. Its totient is φ = 8116416.

The previous prime is 23788907. The next prime is 23788949. The reversal of 23788940 is 4988732.

It is not an unprimeable number, because it can be changed into a prime (23788949) 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, 51149 + ... + 51611.

It is an arithmetic number, because the mean of its divisors is an integer number (1195264).

Almost surely, 223788940 is an apocalyptic number.

23788940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23788940 is an abundant number, since it is smaller than the sum of its proper divisors (33583732).

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

23788940 is a wasteful number, since it uses less digits than its factorization.

23788940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 23788940 is about 4877.3906958537. The cubic root of 23788940 is about 287.6018643452.

The spelling of 23788940 in words is "twenty-three million, seven hundred eighty-eight thousand, nine hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 367 463 734 926 1468 1835 1852 2315 2569 3241 3670 4630 5138 6482 7340 9260 10276 12845 12964 16205 25690 32410 51380 64820 169921 339842 679684 849605 1189447 1699210 2378894 3398420 4757788 5947235 11894470 23788940