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72113895 = 355761139
BaseRepresentation
bin1000100110001…
…01111011100111
312000200202200000
410103011323213
5121430121040
611053352343
71533646410
oct423057347
9160622600
1072113895
1137785267
12201986b3
1311c2ba59
149812807
1564e7130
hex44c5ee7

72113895 has 96 divisors (see below), whose sum is σ = 151656960. Its totient is φ = 32192640.

The previous prime is 72113893. The next prime is 72113897. The reversal of 72113895 is 59831127.

It is an interprime number because it is at equal distance from previous prime (72113893) and next prime (72113897).

It is not a de Polignac number, because 72113895 - 21 = 72113893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72113891) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 518736 + ... + 518874.

It is an arithmetic number, because the mean of its divisors is an integer number (1579760).

Almost surely, 272113895 is an apocalyptic number.

72113895 is an abundant number, since it is smaller than the sum of its proper divisors (79543065).

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

72113895 is a wasteful number, since it uses less digits than its factorization.

72113895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 215 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 72113895 is about 8491.9900494525. The cubic root of 72113895 is about 416.2360112173.

The spelling of 72113895 in words is "seventy-two million, one hundred thirteen thousand, eight hundred ninety-five".

Divisors: 1 3 5 7 9 15 21 27 35 45 61 63 81 105 135 139 183 189 243 305 315 405 417 427 549 567 695 915 945 973 1215 1251 1281 1647 1701 2085 2135 2745 2835 2919 3753 3843 4865 4941 6255 6405 8235 8479 8505 8757 11259 11529 14595 14823 18765 19215 24705 25437 26271 33777 34587 42395 43785 56295 57645 59353 74115 76311 78813 103761 127185 131355 168885 172935 178059 228933 236439 296765 381555 394065 518805 534177 686799 890295 1144665 1182195 1602531 2060397 2670885 3433995 4807593 8012655 10301985 14422779 24037965 72113895