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104540491 = 1121575503
BaseRepresentation
bin1100011101100…
…10100101001011
321021201012121001
412032302211023
5203230243431
614212355431
72406402526
oct616624513
9237635531
10104540491
1154012900
122b015b77
13188733a3
14dc53bbd
15929ee61
hex63b294b

104540491 has 12 divisors (see below), whose sum is σ = 115661056. Its totient is φ = 94414320.

The previous prime is 104540479. The next prime is 104540521. The reversal of 104540491 is 194045401.

It is not a de Polignac number, because 104540491 - 25 = 104540459 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104540411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16246 + ... + 21748.

Almost surely, 2104540491 is an apocalyptic number.

104540491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

104540491 is a deficient number, since it is larger than the sum of its proper divisors (11120565).

104540491 is a wasteful number, since it uses less digits than its factorization.

104540491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682 (or 5671 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 104540491 is about 10224.5044378689. The cubic root of 104540491 is about 471.0801939413.

Adding to 104540491 its reverse (194045401), we get a palindrome (298585892).

The spelling of 104540491 in words is "one hundred four million, five hundred forty thousand, four hundred ninety-one".

Divisors: 1 11 121 157 1727 5503 18997 60533 665863 863971 9503681 104540491