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104898649 = 791327831
BaseRepresentation
bin1100100000010…
…10000001011001
321022101101220011
412100022001121
5203323224044
614224201521
72412423652
oct620120131
9238341804
10104898649
11542379a9
122b1692a1
131896a40b
14dd08529
159321134
hex640a059

104898649 has 4 divisors (see below), whose sum is σ = 106226560. Its totient is φ = 103570740.

The previous prime is 104898593. The next prime is 104898683. The reversal of 104898649 is 946898401.

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: 946898401 = 2932651669.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-104898649 is a prime.

It is a super-2 number, since 2×1048986492 = 22007453124050402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (104898949) 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, 663837 + ... + 663994.

It is an arithmetic number, because the mean of its divisors is an integer number (26556640).

Almost surely, 2104898649 is an apocalyptic number.

It is an amenable number.

104898649 is a deficient number, since it is larger than the sum of its proper divisors (1327911).

104898649 is an equidigital number, since it uses as much as digits as its factorization.

104898649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327910.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 104898649 is about 10242.0041495793. The cubic root of 104898649 is about 471.6175577373.

The spelling of 104898649 in words is "one hundred four million, eight hundred ninety-eight thousand, six hundred forty-nine".

Divisors: 1 79 1327831 104898649