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272191980 = 223537122609
BaseRepresentation
bin10000001110010…
…101000111101100
3200222011210012110
4100032111013230
51024140120410
643002004020
76513410424
oct2016250754
9628153173
10272191980
1112a710955
12771a6610
1344512758
1428215484
1518d69720
hex103951ec

272191980 has 48 divisors (see below), whose sum is σ = 782742240. Its totient is φ = 70622208.

The previous prime is 272191979. The next prime is 272192069. The reversal of 272191980 is 89191272.

272191980 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59085 + ... + 63524.

It is an arithmetic number, because the mean of its divisors is an integer number (16307130).

Almost surely, 2272191980 is an apocalyptic number.

272191980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

272191980 is an abundant number, since it is smaller than the sum of its proper divisors (510550260).

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

272191980 is a wasteful number, since it uses less digits than its factorization.

272191980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122658 (or 122656 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 272191980 is about 16498.2417244990. The cubic root of 272191980 is about 648.0747608455.

The spelling of 272191980 in words is "two hundred seventy-two million, one hundred ninety-one thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 37 60 74 111 148 185 222 370 444 555 740 1110 2220 122609 245218 367827 490436 613045 735654 1226090 1471308 1839135 2452180 3678270 4536533 7356540 9073066 13609599 18146132 22682665 27219198 45365330 54438396 68047995 90730660 136095990 272191980