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872513797080 = 23359777442117
BaseRepresentation
bin11001011001001011101…
…11111111101111011000
310002102002222122022011210
430230211313333233120
5103243402013001310
61504454410423120
7120015463623102
oct14544567775730
93072088568153
10872513797080
11307038323812
12121123131aa0
136437c144403
1430330b80572
1517a69456820
hexcb25dffbd8

872513797080 has 64 divisors (see below), whose sum is σ = 2620220905440. Its totient is φ = 232432166912.

The previous prime is 872513797061. The next prime is 872513797081. The reversal of 872513797080 is 80797315278.

It is a super-2 number, since 2×8725137970802 (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 872513797080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872513797081) 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, 3603819 + ... + 3838298.

Almost surely, 2872513797080 is an apocalyptic number.

It is an amenable number.

872513797080 is an abundant number, since it is smaller than the sum of its proper divisors (1747707108360).

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

872513797080 is a wasteful number, since it uses less digits than its factorization.

872513797080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7443108 (or 7443104 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 57.

The spelling of 872513797080 in words is "eight hundred seventy-two billion, five hundred thirteen million, seven hundred ninety-seven thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 977 1954 2931 3908 4885 5862 7816 9770 11724 14655 19540 23448 29310 39080 58620 117240 7442117 14884234 22326351 29768468 37210585 44652702 59536936 74421170 89305404 111631755 148842340 178610808 223263510 297684680 446527020 893054040 7270948309 14541896618 21812844927 29083793236 36354741545 43625689854 58167586472 72709483090 87251379708 109064224635 145418966180 174502759416 218128449270 290837932360 436256898540 872513797080