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72038064480 = 2535236525187
BaseRepresentation
bin100001100010111001…
…1011010000101100000
320212221110022211202020
41003011303122011200
52140013221030410
653032133421440
75130112305414
oct1030563320540
9225843284666
1072038064480
1128607678088
1211b6549a880
136a4075b575
1436b557cd44
151d194e1a70
hex10c5cda160

72038064480 has 96 divisors (see below), whose sum is σ = 236786022144. Its totient is φ = 18374923776.

The previous prime is 72038064479. The next prime is 72038064487. The reversal of 72038064480 is 8446083027.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72038064487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3251554 + ... + 3273633.

It is an arithmetic number, because the mean of its divisors is an integer number (2466521064).

Almost surely, 272038064480 is an apocalyptic number.

It is an amenable number.

72038064480 is an abundant number, since it is smaller than the sum of its proper divisors (164747957664).

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

72038064480 is a wasteful number, since it uses less digits than its factorization.

72038064480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6525228 (or 6525220 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 72038064480 in words is "seventy-two billion, thirty-eight million, sixty-four thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 32 40 46 48 60 69 80 92 96 115 120 138 160 184 230 240 276 345 368 460 480 552 690 736 920 1104 1380 1840 2208 2760 3680 5520 11040 6525187 13050374 19575561 26100748 32625935 39151122 52201496 65251870 78302244 97877805 104402992 130503740 150079301 156604488 195755610 208805984 261007480 300158602 313208976 391511220 450237903 522014960 600317204 626417952 750396505 783022440 900475806 1044029920 1200634408 1500793010 1566044880 1800951612 2251189515 2401268816 3001586020 3132089760 3601903224 4502379030 4802537632 6003172040 7203806448 9004758060 12006344080 14407612896 18009516120 24012688160 36019032240 72038064480