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87830487874 = 250986277493
BaseRepresentation
bin101000111001100011…
…0101110001101000010
322101201001120001222101
41101303012232031002
52414334101102444
6104203200101014
76226343554213
oct1216306561502
9271631501871
1087830487874
1134281025568
121503230476a
1383895069ac
144372b1940a
152440b833d4
hex14731ae342

87830487874 has 8 divisors (see below), whose sum is σ = 132004565820. Its totient is φ = 43828965936.

The previous prime is 87830487869. The next prime is 87830487881. The reversal of 87830487874 is 47878403878.

It can be written as a sum of positive squares in 2 ways, for example, as 75463935849 + 12366552025 = 274707^2 + 111205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×878304878742 (a number of 23 digits) contains 22 as substring.

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, 43137729 + ... + 43139764.

Almost surely, 287830487874 is an apocalyptic number.

87830487874 is a deficient number, since it is larger than the sum of its proper divisors (44174077946).

87830487874 is a wasteful number, since it uses less digits than its factorization.

87830487874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86278004.

The product of its (nonzero) digits is 67436544, while the sum is 64.

The spelling of 87830487874 in words is "eighty-seven billion, eight hundred thirty million, four hundred eighty-seven thousand, eight hundred seventy-four".

Divisors: 1 2 509 1018 86277493 172554986 43915243937 87830487874