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72502080 = 2635710789
BaseRepresentation
bin1000101001001…
…00101101000000
312001102111011020
410110210231000
5122030031310
611105545440
71540154220
oct424445500
9161374136
1072502080
1137a1a982
1220345280
1312036651
1498b4080
156572170
hex4524b40

72502080 has 112 divisors (see below), whose sum is σ = 263103360. Its totient is φ = 16570368.

The previous prime is 72502069. The next prime is 72502097. The reversal of 72502080 is 8020527.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-3 number, since 3×725020803 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 72502080.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1326 + ... + 12114.

Almost surely, 272502080 is an apocalyptic number.

72502080 is a gapful number since it is divisible by the number (70) 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 72502080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131551680).

72502080 is an abundant number, since it is smaller than the sum of its proper divisors (190601280).

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

72502080 is a wasteful number, since it uses less digits than its factorization.

72502080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10816 (or 10806 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 72502080 is about 8514.8153238928. The cubic root of 72502080 is about 416.9815333793.

The spelling of 72502080 in words is "seventy-two million, five hundred two thousand, eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 64 70 80 84 96 105 112 120 140 160 168 192 210 224 240 280 320 336 420 448 480 560 672 840 960 1120 1344 1680 2240 3360 6720 10789 21578 32367 43156 53945 64734 75523 86312 107890 129468 151046 161835 172624 215780 226569 258936 302092 323670 345248 377615 431560 453138 517872 604184 647340 690496 755230 863120 906276 1035744 1132845 1208368 1294680 1510460 1726240 1812552 2071488 2265690 2416736 2589360 3020920 3452480 3625104 4531380 4833472 5178720 6041840 7250208 9062760 10357440 12083680 14500416 18125520 24167360 36251040 72502080