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104087893 = 7138313781
BaseRepresentation
bin1100011010001…
…00000101010101
321020212012202011
412031010011111
5203121303033
614154544221
72402506150
oct615040525
9236765664
10104087893
1153833858
122aa38071
1318745390
14db76c97
159210ccd
hex6344155

104087893 has 16 divisors (see below), whose sum is σ = 129661056. Its totient is φ = 81357120.

The previous prime is 104087869. The next prime is 104087911. The reversal of 104087893 is 398780401.

It is a de Polignac number, because none of the positive numbers 2k-104087893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104087393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663 + ... + 14443.

It is an arithmetic number, because the mean of its divisors is an integer number (8103816).

Almost surely, 2104087893 is an apocalyptic number.

104087893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

104087893 is a deficient number, since it is larger than the sum of its proper divisors (25573163).

104087893 is a wasteful number, since it uses less digits than its factorization.

104087893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13884.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 104087893 is about 10202.3474259604. The cubic root of 104087893 is about 470.3993783567.

The spelling of 104087893 in words is "one hundred four million, eighty-seven thousand, eight hundred ninety-three".

Divisors: 1 7 13 83 91 581 1079 7553 13781 96467 179153 1143823 1254071 8006761 14869699 104087893