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23455185180 = 22357232428073
BaseRepresentation
bin10101110110000010…
…011011100100011100
32020112122001212021020
4111312002123210130
5341014011411210
614435234004140
71460145533040
oct256602334434
966478055236
1023455185180
119a46927869
124667116650
13229a482ccb
1411c713a020
15924274770
hex57609b91c

23455185180 has 96 divisors (see below), whose sum is σ = 78319954944. Its totient is φ = 5128088064.

The previous prime is 23455185163. The next prime is 23455185251. The reversal of 23455185180 is 8158155432.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1204377 + ... + 1223696.

It is an arithmetic number, because the mean of its divisors is an integer number (815832864).

Almost surely, 223455185180 is an apocalyptic number.

23455185180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23455185180 is an abundant number, since it is smaller than the sum of its proper divisors (54864769764).

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

23455185180 is a wasteful number, since it uses less digits than its factorization.

23455185180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428115 (or 2428113 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 23455185180 in words is "twenty-three billion, four hundred fifty-five million, one hundred eighty-five thousand, one hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 23 28 30 35 42 46 60 69 70 84 92 105 115 138 140 161 210 230 276 322 345 420 460 483 644 690 805 966 1380 1610 1932 2415 3220 4830 9660 2428073 4856146 7284219 9712292 12140365 14568438 16996511 24280730 29136876 33993022 36421095 48561460 50989533 55845679 67986044 72842190 84982555 101979066 111691358 145684380 167537037 169965110 203958132 223382716 254947665 279228395 335074074 339930220 390919753 509895330 558456790 670148148 781839506 837685185 1019790660 1116913580 1172759259 1563679012 1675370370 1954598765 2345518518 3350740740 3909197530 4691037036 5863796295 7818395060 11727592590 23455185180