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20298054 = 23741409
BaseRepresentation
bin100110101101…
…1100101000110
31102012020200210
41031123211012
520144014204
62003020250
7334350000
oct115334506
942166623
1020298054
1110504257
12696a686
134288caa
1429a5370
151bae389
hex135b946

20298054 has 40 divisors (see below), whose sum is σ = 47392920. Its totient is φ = 5795328.

The previous prime is 20298049. The next prime is 20298067. The reversal of 20298054 is 45089202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13702 + ... + 15110.

It is an arithmetic number, because the mean of its divisors is an integer number (1184823).

Almost surely, 220298054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20298054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23696460).

20298054 is an abundant number, since it is smaller than the sum of its proper divisors (27094866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20298054 is an equidigital number, since it uses as much as digits as its factorization.

20298054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1421 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 20298054 is about 4505.3361694773. The cubic root of 20298054 is about 272.7835233267.

The spelling of 20298054 in words is "twenty million, two hundred ninety-eight thousand, fifty-four".

Divisors: 1 2 3 6 7 14 21 42 49 98 147 294 343 686 1029 1409 2058 2401 2818 4227 4802 7203 8454 9863 14406 19726 29589 59178 69041 138082 207123 414246 483287 966574 1449861 2899722 3383009 6766018 10149027 20298054