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271720423 = 13149151929
BaseRepresentation
bin10000001100100…
…001111111100111
3200221021211100101
4100030201333213
51024030023143
642543524531
76506404552
oct2014417747
9627254311
10271720423
1112a419637
1276bb9747
13443a8c20
1428131699
1518cc4b4d
hex10321fe7

271720423 has 16 divisors (see below), whose sum is σ = 296856000. Its totient is φ = 247219200.

The previous prime is 271720411. The next prime is 271720451. The reversal of 271720423 is 324027172.

It is a cyclic number.

It is not a de Polignac number, because 271720423 - 25 = 271720391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 271720391 and 271720400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271720403) 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, 292023 + ... + 292951.

It is an arithmetic number, because the mean of its divisors is an integer number (18553500).

Almost surely, 2271720423 is an apocalyptic number.

271720423 is a deficient number, since it is larger than the sum of its proper divisors (25135577).

271720423 is a wasteful number, since it uses less digits than its factorization.

271720423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 271720423 is about 16483.9444005371. The cubic root of 271720423 is about 647.7002937254.

Adding to 271720423 its reverse (324027172), we get a palindrome (595747595).

The spelling of 271720423 in words is "two hundred seventy-one million, seven hundred twenty thousand, four hundred twenty-three".

Divisors: 1 13 149 151 929 1937 1963 12077 22499 138421 140279 292487 1799473 1823627 20901571 271720423