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72980271 = 347139901
BaseRepresentation
bin1000101100110…
…01011100101111
312002022210010000
410112121130233
5122140332041
611124115343
71544215320
oct426313457
9162283100
1072980271
1138217181
1220535b53
13121731c0
14999a447
156618bb6
hex459972f

72980271 has 40 divisors (see below), whose sum is σ = 134191904. Its totient is φ = 38491200.

The previous prime is 72980251. The next prime is 72980291. The reversal of 72980271 is 17208927.

It is an interprime number because it is at equal distance from previous prime (72980251) and next prime (72980291).

It is not a de Polignac number, because 72980271 - 26 = 72980207 is a prime.

It is a super-3 number, since 3×729802713 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72980221) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2421 + ... + 12321.

Almost surely, 272980271 is an apocalyptic number.

72980271 is a deficient number, since it is larger than the sum of its proper divisors (61211633).

72980271 is a wasteful number, since it uses less digits than its factorization.

72980271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9933 (or 9924 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 72980271 is about 8542.8491149031. The cubic root of 72980271 is about 417.8962659339.

The spelling of 72980271 in words is "seventy-two million, nine hundred eighty thousand, two hundred seventy-one".

Divisors: 1 3 7 9 13 21 27 39 63 81 91 117 189 273 351 567 819 1053 2457 7371 9901 29703 69307 89109 128713 207921 267327 386139 623763 801981 900991 1158417 1871289 2702973 3475251 5613867 8108919 10425753 24326757 72980271