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13451314720 = 255149564233
BaseRepresentation
bin11001000011100001…
…01100011000100000
31021201110000120212111
430201300230120200
5210022014032340
610102432205104
7654223200664
oct144160543040
937643016774
1013451314720
115782a09928
122734999794
131364a3bc2c
1491868a8a4
1553ad9eaea
hex321c2c620

13451314720 has 48 divisors (see below), whose sum is σ = 31992067800. Its totient is φ = 5344405504.

The previous prime is 13451314699. The next prime is 13451314729. The reversal of 13451314720 is 2741315431.

It can be written as a sum of positive squares in 4 ways, for example, as 6413447056 + 7037867664 = 80084^2 + 83892^2 .

It is not an unprimeable number, because it can be changed into a prime (13451314729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258277 + ... + 305956.

Almost surely, 213451314720 is an apocalyptic number.

13451314720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13451314720 is an abundant number, since it is smaller than the sum of its proper divisors (18540753080).

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

13451314720 is a wasteful number, since it uses less digits than its factorization.

13451314720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564397 (or 564389 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 13451314720 in words is "thirteen billion, four hundred fifty-one million, three hundred fourteen thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 149 160 298 596 745 1192 1490 2384 2980 4768 5960 11920 23840 564233 1128466 2256932 2821165 4513864 5642330 9027728 11284660 18055456 22569320 45138640 84070717 90277280 168141434 336282868 420353585 672565736 840707170 1345131472 1681414340 2690262944 3362828680 6725657360 13451314720