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215607421472 = 2531673243973
BaseRepresentation
bin1100100011001100110…
…1000010101000100000
3202121112001101211210112
43020303031002220200
512013030444441342
6243014303150452
721401644562342
oct3106315025040
9677461354715
10215607421472
118349084aa33
12359525a5428
1317440961b01
14a614c61292
15591d770682
hex3233342a20

215607421472 has 48 divisors (see below), whose sum is σ = 444709907712. Its totient is φ = 102769032960.

The previous prime is 215607421453. The next prime is 215607421501. The reversal of 215607421472 is 274124706512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1555523 + ... + 1688450.

It is an arithmetic number, because the mean of its divisors is an integer number (9264789744).

Almost surely, 2215607421472 is an apocalyptic number.

It is an amenable number.

215607421472 is an abundant number, since it is smaller than the sum of its proper divisors (229102486240).

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

215607421472 is a wasteful number, since it uses less digits than its factorization.

215607421472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244081 (or 3244073 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 215607421472 in words is "two hundred fifteen billion, six hundred seven million, four hundred twenty-one thousand, four hundred seventy-two".

Divisors: 1 2 4 8 16 31 32 62 67 124 134 248 268 496 536 992 1072 2077 2144 4154 8308 16616 33232 66464 3243973 6487946 12975892 25951784 51903568 100563163 103807136 201126326 217346191 402252652 434692382 804505304 869384764 1609010608 1738769528 3218021216 3477539056 6737731921 6955078112 13475463842 26950927684 53901855368 107803710736 215607421472