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28124700348 = 22319326594567
BaseRepresentation
bin11010001100010111…
…001101111010111100
32200121001120210212110
4122030113031322330
5430044410402343
620530441534020
72013646002633
oct321427157274
980531523773
1028124700348
1110a22729708
12554aaa4310
1328629cc234
14150b37051a
15ae9199833
hex68c5cdebc

28124700348 has 48 divisors (see below), whose sum is σ = 66003580160. Its totient is φ = 9320776704.

The previous prime is 28124700343. The next prime is 28124700361. The reversal of 28124700348 is 84300742182.

It is a super-4 number, since 4×281247003484 (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28124700343) 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, 6155961 + ... + 6160527.

Almost surely, 228124700348 is an apocalyptic number.

It is an amenable number.

28124700348 is an abundant number, since it is smaller than the sum of its proper divisors (37878879812).

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

28124700348 is a wasteful number, since it uses less digits than its factorization.

28124700348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7426 (or 7424 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The spelling of 28124700348 in words is "twenty-eight billion, one hundred twenty-four million, seven hundred thousand, three hundred forty-eight".

Divisors: 1 2 3 4 6 12 193 386 579 772 1158 2316 2659 4567 5318 7977 9134 10636 13701 15954 18268 27402 31908 54804 513187 881431 1026374 1539561 1762862 2052748 2644293 3079122 3525724 5288586 6158244 10577172 12143653 24287306 36430959 48574612 72861918 145723836 2343725029 4687450058 7031175087 9374900116 14062350174 28124700348