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11872568320 = 21054353927
BaseRepresentation
bin10110000111010100…
…10000010000000000
31010122102022221221121
423003222100100000
5143303334141240
65242034202024
7600133110544
oct130352202000
933572287847
1011872568320
115042834338
122374123314
131172938072
14808b29a24
1549749d04a
hex2c3a90400

11872568320 has 88 divisors (see below), whose sum is σ = 29143122624. Its totient is φ = 4638498816.

The previous prime is 11872568311. The next prime is 11872568377. The reversal of 11872568320 is 2386527811.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193197 + ... + 247123.

It is an arithmetic number, because the mean of its divisors is an integer number (331171848).

Almost surely, 211872568320 is an apocalyptic number.

11872568320 is a gapful number since it is divisible by the number (10) 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 11872568320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14571561312).

11872568320 is an abundant number, since it is smaller than the sum of its proper divisors (17270554304).

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

11872568320 is an equidigital number, since it uses as much as digits as its factorization.

11872568320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53995 (or 53977 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 11872568320 in words is "eleven billion, eight hundred seventy-two million, five hundred sixty-eight thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 43 64 80 86 128 160 172 215 256 320 344 430 512 640 688 860 1024 1280 1376 1720 2560 2752 3440 5120 5504 6880 11008 13760 22016 27520 44032 53927 55040 107854 110080 215708 220160 269635 431416 539270 862832 1078540 1725664 2157080 2318861 3451328 4314160 4637722 6902656 8628320 9275444 11594305 13805312 17256640 18550888 23188610 27610624 34513280 37101776 46377220 55221248 69026560 74203552 92754440 138053120 148407104 185508880 276106240 296814208 371017760 593628416 742035520 1187256832 1484071040 2374513664 2968142080 5936284160 11872568320