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20298319 = 891311741
BaseRepresentation
bin100110101101…
…1101001001111
31102012021001121
41031123221033
520144021234
62003021411
7334350526
oct115335117
942167047
1020298319
1110504478
12696a867
134289152
1429a54bd
151bae4b4
hex135ba4f

20298319 has 8 divisors (see below), whose sum is σ = 20694960. Its totient is φ = 19905600.

The previous prime is 20298293. The next prime is 20298337. The reversal of 20298319 is 91389202.

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 20298319 - 27 = 20298191 is a prime.

It is a super-2 number, since 2×202983192 = 824043508451522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20298359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10789 + ... + 12529.

It is an arithmetic number, because the mean of its divisors is an integer number (2586870).

Almost surely, 220298319 is an apocalyptic number.

20298319 is a deficient number, since it is larger than the sum of its proper divisors (396641).

20298319 is a wasteful number, since it uses less digits than its factorization.

20298319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 20298319 is about 4505.3655789514. The cubic root of 20298319 is about 272.7847104244.

The spelling of 20298319 in words is "twenty million, two hundred ninety-eight thousand, three hundred nineteen".

Divisors: 1 89 131 1741 11659 154949 228071 20298319