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272970 = 2345337
BaseRepresentation
bin1000010101001001010
3111212110000
41002221022
532213340
65503430
72214555
oct1025112
9455400
10272970
111770a5
12111b76
1397329
147169c
1555d30
hex42a4a

272970 has 40 divisors (see below), whose sum is σ = 736164. Its totient is φ = 72576.

The previous prime is 272959. The next prime is 272971. The reversal of 272970 is 79272.

It can be written as a sum of positive squares in 2 ways, for example, as 263169 + 9801 = 513^2 + 99^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (272971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 642 + ... + 978.

2272970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 272970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368082).

272970 is an abundant number, since it is smaller than the sum of its proper divisors (463194).

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

272970 is a wasteful number, since it uses less digits than its factorization.

272970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 272970 is about 522.4653098532. The cubic root of 272970 is about 64.8691648332.

The spelling of 272970 in words is "two hundred seventy-two thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 337 405 674 810 1011 1685 2022 3033 3370 5055 6066 9099 10110 15165 18198 27297 30330 45495 54594 90990 136485 272970