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72190471480 = 2351804761787
BaseRepresentation
bin100001100111011100…
…0110010110100111000
320220100002002220211221
41003032320302310320
52140321230041410
653055220201424
75133642611611
oct1031670626470
9226302086757
1072190471480
1128685703786
1211ba8539274
136a661c0c1a
1436cb8d2c08
151d27a994da
hex10cee32d38

72190471480 has 16 divisors (see below), whose sum is σ = 162428560920. Its totient is φ = 28876188576.

The previous prime is 72190471469. The next prime is 72190471489. The reversal of 72190471480 is 8417409127.

It is a super-2 number, since 2×721904714802 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72190471489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902380854 + ... + 902380933.

Almost surely, 272190471480 is an apocalyptic number.

It is an amenable number.

72190471480 is an abundant number, since it is smaller than the sum of its proper divisors (90238089440).

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

72190471480 is a wasteful number, since it uses less digits than its factorization.

72190471480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804761798 (or 1804761794 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 72190471480 in words is "seventy-two billion, one hundred ninety million, four hundred seventy-one thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 1804761787 3609523574 7219047148 9023808935 14438094296 18047617870 36095235740 72190471480