Search a number
-
+
72854670 = 23572291709
BaseRepresentation
bin1000101011110…
…10110010001110
312002002101211010
410111322302032
5122122322140
611121310050
71543153200
oct425726216
9162071733
1072854670
1138140879
1220495326
131212ac95
149966770
1565e1880
hex457ac8e

72854670 has 96 divisors (see below), whose sum is σ = 210535200. Its totient is φ = 16068864.

The previous prime is 72854651. The next prime is 72854687. The reversal of 72854670 is 7645827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41776 + ... + 43484.

It is an arithmetic number, because the mean of its divisors is an integer number (2193075).

Almost surely, 272854670 is an apocalyptic number.

72854670 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 72854670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105267600).

72854670 is an abundant number, since it is smaller than the sum of its proper divisors (137680530).

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

72854670 is a wasteful number, since it uses less digits than its factorization.

72854670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 72854670 is about 8535.4947132548. The cubic root of 72854670 is about 417.6563913843.

The spelling of 72854670 in words is "seventy-two million, eight hundred fifty-four thousand, six hundred seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 29 30 35 42 49 58 70 87 98 105 145 147 174 203 210 245 290 294 406 435 490 609 735 870 1015 1218 1421 1470 1709 2030 2842 3045 3418 4263 5127 6090 7105 8526 8545 10254 11963 14210 17090 21315 23926 25635 35889 42630 49561 51270 59815 71778 83741 99122 119630 148683 167482 179445 247805 251223 297366 346927 358890 418705 495610 502446 693854 743415 837410 1040781 1256115 1486830 1734635 2081562 2428489 2512230 3469270 4856978 5203905 7285467 10407810 12142445 14570934 24284890 36427335 72854670