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23613680 = 2451797179
BaseRepresentation
bin101101000010…
…1000011110000
31122102200212202
41122011003300
522021114210
62202042332
7404466356
oct132050360
948380782
1023613680
1112369342
127aa93a8
134b7a1bc
1431c97d6
1521169a5
hex16850f0

23613680 has 80 divisors (see below), whose sum is σ = 59058720. Its totient is φ = 8749056.

The previous prime is 23613679. The next prime is 23613691. The reversal of 23613680 is 8631632.

It is a tau number, because it is divible by the number of its divisors (80).

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, 131831 + ... + 132009.

It is an arithmetic number, because the mean of its divisors is an integer number (738234).

Almost surely, 223613680 is an apocalyptic number.

23613680 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 23613680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29529360).

23613680 is an abundant number, since it is smaller than the sum of its proper divisors (35445040).

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

23613680 is a wasteful number, since it uses less digits than its factorization.

23613680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 23613680 is about 4859.3909083341. The cubic root of 23613680 is about 286.8938407164.

The spelling of 23613680 in words is "twenty-three million, six hundred thirteen thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 17 20 34 40 68 80 85 97 136 170 179 194 272 340 358 388 485 680 716 776 895 970 1360 1432 1552 1649 1790 1940 2864 3043 3298 3580 3880 6086 6596 7160 7760 8245 12172 13192 14320 15215 16490 17363 24344 26384 30430 32980 34726 48688 60860 65960 69452 86815 121720 131920 138904 173630 243440 277808 295171 347260 590342 694520 1180684 1389040 1475855 2361368 2951710 4722736 5903420 11806840 23613680