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72872352 = 2533712049
BaseRepresentation
bin1000101011111…
…11000110100000
312002010022002000
410111333012200
5122123403402
611121524000
71543255560
oct425770640
9162108060
1072872352
1138153093
12204a3600
1312136047
14996cda0
1565e6c1c
hex457f1a0

72872352 has 96 divisors (see below), whose sum is σ = 242928000. Its totient is φ = 20818944.

The previous prime is 72872339. The next prime is 72872377. The reversal of 72872352 is 25327827.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24 + ... + 12072.

It is an arithmetic number, because the mean of its divisors is an integer number (2530500).

Almost surely, 272872352 is an apocalyptic number.

72872352 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72872352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121464000).

72872352 is an abundant number, since it is smaller than the sum of its proper divisors (170055648).

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

72872352 is a wasteful number, since it uses less digits than its factorization.

72872352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12075 (or 12061 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 72872352 is about 8536.5304427501. The cubic root of 72872352 is about 417.6901773811.

The spelling of 72872352 in words is "seventy-two million, eight hundred seventy-two thousand, three hundred fifty-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 72 84 96 108 112 126 144 168 189 216 224 252 288 336 378 432 504 672 756 864 1008 1512 2016 3024 6048 12049 24098 36147 48196 72294 84343 96392 108441 144588 168686 192784 216882 253029 289176 325323 337372 385568 433764 506058 578352 650646 674744 759087 867528 1012116 1156704 1301292 1349488 1518174 1735056 2024232 2277261 2602584 2698976 3036348 3470112 4048464 4554522 5205168 6072696 8096928 9109044 10410336 12145392 18218088 24290784 36436176 72872352