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28725024960 = 263259973967
BaseRepresentation
bin11010110000001001…
…010001100011000000
32202010220012110102100
4122300021101203000
5432312101244320
621110204550400
72034555453312
oct326011214300
982126173370
1028725024960
1111200589455
125697b52400
13292a1ac7b8
141566d9d7b2
15b31c2d790
hex6b02518c0

28725024960 has 84 divisors (see below), whose sum is σ = 98802127008. Its totient is φ = 7660005888.

The previous prime is 28725024953. The next prime is 28725024997. The reversal of 28725024960 is 6942052782.

28725024960 is a `hidden beast` number, since 2 + 87 + 2 + 502 + 4 + 9 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4984104 + ... + 4989863.

Almost surely, 228725024960 is an apocalyptic number.

28725024960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28725024960 is an abundant number, since it is smaller than the sum of its proper divisors (70077102048).

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

28725024960 is a wasteful number, since it uses less digits than its factorization.

28725024960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973990 (or 9973977 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 28725024960 in words is "twenty-eight billion, seven hundred twenty-five million, twenty-four thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 144 160 180 192 240 288 320 360 480 576 720 960 1440 2880 9973967 19947934 29921901 39895868 49869835 59843802 79791736 89765703 99739670 119687604 149609505 159583472 179531406 199479340 239375208 299219010 319166944 359062812 398958680 448828515 478750416 598438020 638333888 718125624 797917360 897657030 957500832 1196876040 1436251248 1595834720 1795314060 1915001664 2393752080 2872502496 3191669440 3590628120 4787504160 5745004992 7181256240 9575008320 14362512480 28725024960