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87259202258 = 22088772
BaseRepresentation
bin101000101000100001…
…1011100001011010010
322100020020120202102212
41101101003130023102
52412201323433013
6104030351312122
76206235660404
oct1212103341322
9270206522385
1087259202258
11340085aa198
1214ab2b1b642
1382c8052b77
14431acc8b74
15240a9386a8
hex14510dc2d2

87259202258 has 6 divisors (see below), whose sum is σ = 130889430021. Its totient is φ = 43629392252.

The previous prime is 87259202249. The next prime is 87259202269. The reversal of 87259202258 is 85220295278.

It can be written as a sum of positive squares in 2 ways, for example, as 70051796929 + 17207405329 = 264673^2 + 131177^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=208877.

It is a super-2 number, since 2×872592022582 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 313316 + ... + 522192.

Almost surely, 287259202258 is an apocalyptic number.

87259202258 is a deficient number, since it is larger than the sum of its proper divisors (43630227763).

87259202258 is an frugal number, since it uses more digits than its factorization.

87259202258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417756 (or 208879 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 50.

Multiplying 87259202258 by its sum of digits (50), we get a square (4362960112900 = 20887702).

The spelling of 87259202258 in words is "eighty-seven billion, two hundred fifty-nine million, two hundred two thousand, two hundred fifty-eight".

Divisors: 1 2 208877 417754 43629601129 87259202258