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19380054 = 2310730187
BaseRepresentation
bin100100111101…
…1011101010110
31100110121102210
41021323131112
514430130204
61531214250
7323504421
oct111733526
940417383
1019380054
11aa37581
1265a7386
1340271b5
1428069b8
151a7c389
hex127b756

19380054 has 16 divisors (see below), whose sum is σ = 39123648. Its totient is φ = 6399432.

The previous prime is 19380037. The next prime is 19380059. The reversal of 19380054 is 45008391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19380059) 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, 14452 + ... + 15735.

It is an arithmetic number, because the mean of its divisors is an integer number (2445228).

Almost surely, 219380054 is an apocalyptic number.

19380054 is an abundant number, since it is smaller than the sum of its proper divisors (19743594).

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

19380054 is a wasteful number, since it uses less digits than its factorization.

19380054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30299.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 19380054 is about 4402.2782738032. The cubic root of 19380054 is about 268.6076192634.

The spelling of 19380054 in words is "nineteen million, three hundred eighty thousand, fifty-four".

Divisors: 1 2 3 6 107 214 321 642 30187 60374 90561 181122 3230009 6460018 9690027 19380054