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998133445 = 51263715797
BaseRepresentation
bin111011011111100…
…100111011000101
32120120011102200101
4323133210323011
54021010232240
6243013244101
733506665021
oct7337447305
92516142611
10998133445
11472469481
1223a333631
1312ba3570a
14967c3381
155c96339a
hex3b7e4ec5

998133445 has 8 divisors (see below), whose sum is σ = 1197930744. Its totient is φ = 798393024.

The previous prime is 998133439. The next prime is 998133473. The reversal of 998133445 is 544331899.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41654116 + 956479329 = 6454^2 + 30927^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 998133445 - 25 = 998133413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 998133395 and 998133404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55287 + ... + 71083.

It is an arithmetic number, because the mean of its divisors is an integer number (149741343).

Almost surely, 2998133445 is an apocalyptic number.

998133445 is the 15797-th decagonal number.

It is an amenable number.

998133445 is a deficient number, since it is larger than the sum of its proper divisors (199797299).

998133445 is a wasteful number, since it uses less digits than its factorization.

998133445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28439.

The product of its digits is 466560, while the sum is 46.

The square root of 998133445 is about 31593.2499910978. The cubic root of 998133445 is about 999.3774274839.

The spelling of 998133445 in words is "nine hundred ninety-eight million, one hundred thirty-three thousand, four hundred forty-five".

Divisors: 1 5 12637 15797 63185 78985 199626689 998133445