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270223891 = 71719911411
BaseRepresentation
bin10000000110110…
…100101000010011
3200211110210111021
4100012310220103
51023134131031
642451500311
76460602520
oct2006645023
9624423437
10270223891
11129597233
12765b7697
1343ca39c2
1427c62147
1518acb511
hex101b4a13

270223891 has 16 divisors (see below), whose sum is σ = 328665600. Its totient is φ = 216881280.

The previous prime is 270223883. The next prime is 270223903. The reversal of 270223891 is 198322072.

It is not a de Polignac number, because 270223891 - 23 = 270223883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (270223091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17976 + ... + 29386.

It is an arithmetic number, because the mean of its divisors is an integer number (20541600).

Almost surely, 2270223891 is an apocalyptic number.

270223891 is a deficient number, since it is larger than the sum of its proper divisors (58441709).

270223891 is a wasteful number, since it uses less digits than its factorization.

270223891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11634.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 270223891 is about 16438.4880995790. The cubic root of 270223891 is about 646.5090089616.

The spelling of 270223891 in words is "two hundred seventy million, two hundred twenty-three thousand, eight hundred ninety-one".

Divisors: 1 7 17 119 199 1393 3383 11411 23681 79877 193987 1357909 2270789 15895523 38603413 270223891