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19280054 = 267143881
BaseRepresentation
bin100100110001…
…1000010110110
31100021112021002
41021203002312
514413430204
61525123302
7322610033
oct111430266
940245232
1019280054
11a979432
126559532
133cc0821
1427bc38a
151a5c91e
hex12630b6

19280054 has 8 divisors (see below), whose sum is σ = 29351928. Its totient is φ = 9496080.

The previous prime is 19280017. The next prime is 19280059. The reversal of 19280054 is 45008291.

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

It is a junction number, because it is equal to n+sod(n) for n = 19279999 and 19280026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19280059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71807 + ... + 72074.

It is an arithmetic number, because the mean of its divisors is an integer number (3668991).

Almost surely, 219280054 is an apocalyptic number.

19280054 is a deficient number, since it is larger than the sum of its proper divisors (10071874).

19280054 is a wasteful number, since it uses less digits than its factorization.

19280054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143950.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 19280054 is about 4390.9058290972. The cubic root of 19280054 is about 268.1448222242.

The spelling of 19280054 in words is "nineteen million, two hundred eighty thousand, fifty-four".

Divisors: 1 2 67 134 143881 287762 9640027 19280054