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87440101732 = 22171285883849
BaseRepresentation
bin101000101101111010…
…1100001000101100100
322100200211222101212101
41101123311201011210
52413034131223412
6104100332501444
76213563413204
oct1213365410544
9270624871771
1087440101732
11340a0726695
1214b4361a884
138326680289
144336d38404
15241b76d457
hex145bd61164

87440101732 has 12 divisors (see below), whose sum is σ = 162021365100. Its totient is φ = 41148283136.

The previous prime is 87440101699. The next prime is 87440101787. The reversal of 87440101732 is 23710104478.

It can be written as a sum of positive squares in 2 ways, for example, as 78722891776 + 8717209956 = 280576^2 + 93366^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87440101691 and 87440101700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642941857 + ... + 642941992.

It is an arithmetic number, because the mean of its divisors is an integer number (13501780425).

Almost surely, 287440101732 is an apocalyptic number.

It is an amenable number.

87440101732 is a deficient number, since it is larger than the sum of its proper divisors (74581263368).

87440101732 is a wasteful number, since it uses less digits than its factorization.

87440101732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285883870 (or 1285883868 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The spelling of 87440101732 in words is "eighty-seven billion, four hundred forty million, one hundred one thousand, seven hundred thirty-two".

Divisors: 1 2 4 17 34 68 1285883849 2571767698 5143535396 21860025433 43720050866 87440101732