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728814960 = 243253132653
BaseRepresentation
bin101011011100001…
…101010101110000
31212210101122011200
4223130031111300
52443034034320
6200153011200
724026552646
oct5334152560
91783348150
10728814960
11344440515
121840b3b00
13b7cbab73
146cb19196
1543eb5290
hex2b70d570

728814960 has 120 divisors (see below), whose sum is σ = 2526635904. Its totient is φ = 188075520.

The previous prime is 728814959. The next prime is 728814997. The reversal of 728814960 is 69418827.

728814960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5994 + ... + 38646.

Almost surely, 2728814960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728814960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263317952).

728814960 is an abundant number, since it is smaller than the sum of its proper divisors (1797820944).

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

728814960 is a wasteful number, since it uses less digits than its factorization.

728814960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32703 (or 32694 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 728814960 is about 26996.5731158605. The cubic root of 728814960 is about 899.9238454081.

It can be divided in two parts, 72881 and 4960, that added together give a square (77841 = 2792).

The spelling of 728814960 in words is "seven hundred twenty-eight million, eight hundred fourteen thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 31 36 40 45 48 60 62 72 80 90 93 120 124 144 155 180 186 240 248 279 310 360 372 465 496 558 620 720 744 930 1116 1240 1395 1488 1860 2232 2480 2790 3720 4464 5580 7440 11160 22320 32653 65306 97959 130612 163265 195918 261224 293877 326530 391836 489795 522448 587754 653060 783672 979590 1012243 1175508 1306120 1469385 1567344 1959180 2024486 2351016 2612240 2938770 3036729 3918360 4048972 4702032 5061215 5877540 6073458 7836720 8097944 9110187 10122430 11755080 12146916 15183645 16195888 18220374 20244860 23510160 24293832 30367290 36440748 40489720 45550935 48587664 60734580 72881496 80979440 91101870 121469160 145762992 182203740 242938320 364407480 728814960