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104885281 = 131800651
BaseRepresentation
bin1100100000001…
…10110000100001
321022100201120001
412100012300201
5203322312111
614224020001
72412336664
oct620066041
9238321501
10104885281
1154228956
122b161601
13189642c7
14dd036db
15931c1c1
hex6406c21

104885281 has 4 divisors (see below), whose sum is σ = 105686064. Its totient is φ = 104084500.

The previous prime is 104885279. The next prime is 104885311. The reversal of 104885281 is 182588401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 182588401 = 942119381.

It is a cyclic number.

It is not a de Polignac number, because 104885281 - 21 = 104885279 is a prime.

It is a super-2 number, since 2×1048852812 = 22001844340897922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104885281.

It is not an unprimeable number, because it can be changed into a prime (104885201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400195 + ... + 400456.

It is an arithmetic number, because the mean of its divisors is an integer number (26421516).

Almost surely, 2104885281 is an apocalyptic number.

It is an amenable number.

104885281 is a deficient number, since it is larger than the sum of its proper divisors (800783).

104885281 is an equidigital number, since it uses as much as digits as its factorization.

104885281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800782.

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 104885281 is about 10241.3515221381. The cubic root of 104885281 is about 471.5975229977.

The spelling of 104885281 in words is "one hundred four million, eight hundred eighty-five thousand, two hundred eighty-one".

Divisors: 1 131 800651 104885281