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28710607072 = 2572346711933
BaseRepresentation
bin11010101111010010…
…010001100011100000
32202002220001221210111
4122233102101203200
5432244403411242
621104531541104
72034322063540
oct325722214340
982086057714
1028710607072
11111a3431044
12569315a794
1329272020c4
1415650c9320
15b30831817
hex6af4918e0

28710607072 has 96 divisors (see below), whose sum is σ = 67557514752. Its totient is φ = 11743378944.

The previous prime is 28710607043. The next prime is 28710607073. The reversal of 28710607072 is 27070601782.

It is a super-3 number, since 3×287106070723 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28710607073) 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, 2400018 + ... + 2411950.

It is an arithmetic number, because the mean of its divisors is an integer number (703724112).

Almost surely, 228710607072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28710607072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33778757376).

28710607072 is an abundant number, since it is smaller than the sum of its proper divisors (38846907680).

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

28710607072 is a wasteful number, since it uses less digits than its factorization.

28710607072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12440 (or 12432 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 40.

The spelling of 28710607072 in words is "twenty-eight billion, seven hundred ten million, six hundred seven thousand, seventy-two".

Divisors: 1 2 4 7 8 14 16 23 28 32 46 56 92 112 161 184 224 322 368 467 644 736 934 1288 1868 2576 3269 3736 5152 6538 7472 10741 11933 13076 14944 21482 23866 26152 42964 47732 52304 75187 83531 85928 95464 104608 150374 167062 171856 190928 274459 300748 334124 343712 381856 548918 601496 668248 1097836 1202992 1336496 1921213 2195672 2405984 2672992 3842426 4391344 5572711 7684852 8782688 11145422 15369704 22290844 30739408 39008977 44581688 61478816 78017954 89163376 128172353 156035908 178326752 256344706 312071816 512689412 624143632 897206471 1025378824 1248287264 1794412942 2050757648 3588825884 4101515296 7177651768 14355303536 28710607072