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20348055 = 3257134969
BaseRepresentation
bin100110110011…
…1110010010111
31102021210021200
41031213302113
520202114210
62004043543
7334645530
oct115476227
942253250
1020348055
1110538882
1269935b3
1342a5990
1429b9687
151bbe0c0
hex1367c97

20348055 has 48 divisors (see below), whose sum is σ = 43417920. Its totient is φ = 8584704.

The previous prime is 20348051. The next prime is 20348063. The reversal of 20348055 is 55084302.

It is not a de Polignac number, because 20348055 - 22 = 20348051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20348051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1611 + ... + 6579.

It is an arithmetic number, because the mean of its divisors is an integer number (904540).

Almost surely, 220348055 is an apocalyptic number.

20348055 is an abundant number, since it is smaller than the sum of its proper divisors (23069865).

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

20348055 is a wasteful number, since it uses less digits than its factorization.

20348055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000 (or 4997 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 20348055 is about 4510.8818428330. The cubic root of 20348055 is about 273.0073258107.

The spelling of 20348055 in words is "twenty million, three hundred forty-eight thousand, fifty-five".

Divisors: 1 3 5 7 9 13 15 21 35 39 45 63 65 91 105 117 195 273 315 455 585 819 1365 4095 4969 14907 24845 34783 44721 64597 74535 104349 173915 193791 223605 313047 322985 452179 521745 581373 968955 1356537 1565235 2260895 2906865 4069611 6782685 20348055