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271228997 = 1361571599
BaseRepresentation
bin10000001010101…
…010000001000101
3200220100212020102
4100022222001011
51023413311442
642525213445
76502260044
oct2012520105
9626325212
10271228997
1112a1133a6
1276a01285
1344266340
142804455b
1518c29232
hex102aa045

271228997 has 16 divisors (see below), whose sum is σ = 297897600. Its totient is φ = 245419200.

The previous prime is 271228957. The next prime is 271229003. The reversal of 271228997 is 799822172.

It is not a de Polignac number, because 271228997 - 210 = 271227973 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271228927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452504 + ... + 453102.

It is an arithmetic number, because the mean of its divisors is an integer number (18618600).

Almost surely, 2271228997 is an apocalyptic number.

It is an amenable number.

271228997 is a deficient number, since it is larger than the sum of its proper divisors (26668603).

271228997 is a wasteful number, since it uses less digits than its factorization.

271228997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its digits is 254016, while the sum is 47.

The square root of 271228997 is about 16469.0314530029. The cubic root of 271228997 is about 647.3095871778.

The spelling of 271228997 in words is "two hundred seventy-one million, two hundred twenty-eight thousand, nine hundred ninety-seven".

Divisors: 1 13 61 571 599 793 7423 7787 34831 36539 342029 452803 475007 4446377 20863769 271228997