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23120512000 = 21053180629
BaseRepresentation
bin10101100010000101…
…110000010000000000
32012200022022200222021
4111202011300100000
5334322322341000
614342120451224
71445643052345
oct254205602000
965608280867
1023120512000
119894a20963
124593019b14
132246035141
1411948dc7cc
15904bb711a
hex562170400

23120512000 has 88 divisors (see below), whose sum is σ = 57680939160. Its totient is φ = 9248153600.

The previous prime is 23120511983. The next prime is 23120512021. The reversal of 23120512000 is 21502132.

It can be written as a sum of positive squares in 4 ways, for example, as 702038016 + 22418473984 = 26496^2 + 149728^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 37686 + ... + 218314.

Almost surely, 223120512000 is an apocalyptic number.

23120512000 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 23120512000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28840469580).

23120512000 is an abundant number, since it is smaller than the sum of its proper divisors (34560427160).

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

23120512000 is an equidigital number, since it uses as much as digits as its factorization.

23120512000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180664 (or 180636 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

It can be divided in two parts, 23120 and 512000, that multiplied together give a square (11837440000 = 1088002).

The spelling of 23120512000 in words is "twenty-three billion, one hundred twenty million, five hundred twelve thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 512 640 800 1000 1024 1280 1600 2000 2560 3200 4000 5120 6400 8000 12800 16000 25600 32000 64000 128000 180629 361258 722516 903145 1445032 1806290 2890064 3612580 4515725 5780128 7225160 9031450 11560256 14450320 18062900 22578625 23120512 28900640 36125800 45157250 46241024 57801280 72251600 90314500 92482048 115602560 144503200 180629000 184964096 231205120 289006400 361258000 462410240 578012800 722516000 924820480 1156025600 1445032000 2312051200 2890064000 4624102400 5780128000 11560256000 23120512000