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87041028 = 2237253419
BaseRepresentation
bin1010011000000…
…10010000000100
320001210010211210
411030002100010
5134240303103
612345331420
72104556634
oct514022004
9201703753
1087041028
1145150238
1225196b70
1315057189
14b7ba6c4
157994e03
hex5302404

87041028 has 12 divisors (see below), whose sum is σ = 203095760. Its totient is φ = 29013672.

The previous prime is 87040997. The next prime is 87041029. The reversal of 87041028 is 82014078.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×870410282 = 15152281110593568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87040986 and 87041004.

It is not an unprimeable number, because it can be changed into a prime (87041029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3626698 + ... + 3626721.

Almost surely, 287041028 is an apocalyptic number.

It is an amenable number.

87041028 is an abundant number, since it is smaller than the sum of its proper divisors (116054732).

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

87041028 is a wasteful number, since it uses less digits than its factorization.

87041028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7253426 (or 7253424 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 87041028 is about 9329.5781255103. The cubic root of 87041028 is about 443.1744052543.

The spelling of 87041028 in words is "eighty-seven million, forty-one thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 7253419 14506838 21760257 29013676 43520514 87041028