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28740806760 = 23351912605617
BaseRepresentation
bin11010110001000101…
…011110100001101000
32202011222220020222110
4122301011132201220
5432330121304020
621111531122320
72035136553351
oct326105364150
982158806873
1028740806760
1111209488566
1256a12a33a0
132930546c43
14156910ad28
15b332e98e0
hex6b115e868

28740806760 has 64 divisors (see below), whose sum is σ = 90760449600. Its totient is φ = 7260834816.

The previous prime is 28740806749. The next prime is 28740806771. The reversal of 28740806760 is 6760804782.

It is an interprime number because it is at equal distance from previous prime (28740806749) and next prime (28740806771).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6300529 + ... + 6305088.

It is an arithmetic number, because the mean of its divisors is an integer number (1418132025).

Almost surely, 228740806760 is an apocalyptic number.

28740806760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28740806760 is an abundant number, since it is smaller than the sum of its proper divisors (62019642840).

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

28740806760 is a wasteful number, since it uses less digits than its factorization.

28740806760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12605650 (or 12605646 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 28740806760 in words is "twenty-eight billion, seven hundred forty million, eight hundred six thousand, seven hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 19 20 24 30 38 40 57 60 76 95 114 120 152 190 228 285 380 456 570 760 1140 2280 12605617 25211234 37816851 50422468 63028085 75633702 100844936 126056170 151267404 189084255 239506723 252112340 302534808 378168510 479013446 504224680 718520169 756337020 958026892 1197533615 1437040338 1512674040 1916053784 2395067230 2874080676 3592600845 4790134460 5748161352 7185201690 9580268920 14370403380 28740806760