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104890801 = 857122393
BaseRepresentation
bin1100100000010…
…00000110110001
321022101000010111
412100020012301
5203323001201
614224101321
72412362041
oct620100661
9238330114
10104890801
1154232014
122b164841
1318966982
14dd05721
15931db51
hex64081b1

104890801 has 4 divisors (see below), whose sum is σ = 105014052. Its totient is φ = 104767552.

The previous prime is 104890789. The next prime is 104890817. The reversal of 104890801 is 108098401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 108098401 = 1049103049.

It can be written as a sum of positive squares in 2 ways, for example, as 73977201 + 30913600 = 8601^2 + 5560^2 .

It is a cyclic number.

It is not a de Polignac number, because 104890801 - 25 = 104890769 is a prime.

It is a super-2 number, since 2×1048908012 = 22004160268843202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104890871) 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, 60340 + ... + 62053.

It is an arithmetic number, because the mean of its divisors is an integer number (26253513).

Almost surely, 2104890801 is an apocalyptic number.

It is an amenable number.

104890801 is a deficient number, since it is larger than the sum of its proper divisors (123251).

104890801 is an equidigital number, since it uses as much as digits as its factorization.

104890801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123250.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 104890801 is about 10241.6210142731. The cubic root of 104890801 is about 471.6057960767.

The spelling of 104890801 in words is "one hundred four million, eight hundred ninety thousand, eight hundred one".

Divisors: 1 857 122393 104890801