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87005053180 = 2254878932757
BaseRepresentation
bin101000100000111100…
…1111100000011111100
322022120112100122110001
41101001321330003330
52411141243200210
6103545232124044
76200031515113
oct1210171740374
9268515318401
1087005053180
11339980a2231
1214a41996624
1382874b9ab6
1442d524cc7a
1523e348503a
hex1441e7c0fc

87005053180 has 24 divisors (see below), whose sum is σ = 183085807968. Its totient is φ = 34730555328.

The previous prime is 87005053171. The next prime is 87005053207. The reversal of 87005053180 is 8135050078.

It is a super-2 number, since 2×870050531802 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4456639 + ... + 4476118.

It is an arithmetic number, because the mean of its divisors is an integer number (7628575332).

Almost surely, 287005053180 is an apocalyptic number.

It is an amenable number.

87005053180 is an abundant number, since it is smaller than the sum of its proper divisors (96080754788).

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

87005053180 is a wasteful number, since it uses less digits than its factorization.

87005053180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8933253 (or 8933251 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 87005053180 in words is "eighty-seven billion, five million, fifty-three thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 487 974 1948 2435 4870 9740 8932757 17865514 35731028 44663785 89327570 178655140 4350252659 8700505318 17401010636 21751263295 43502526590 87005053180