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19228055 = 571149943
BaseRepresentation
bin100100101011…
…0010110010111
31100011212221012
41021112112113
514410244210
61524042435
7322302320
oct111262627
940155835
1019228055
11a943360
12653341b
133ca2c62
1427a7447
151a4c305
hex1256597

19228055 has 16 divisors (see below), whose sum is σ = 28767744. Its totient is φ = 11986080.

The previous prime is 19228039. The next prime is 19228063. The reversal of 19228055 is 55082291.

It is not a de Polignac number, because 19228055 - 24 = 19228039 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 24587 + ... + 25356.

It is an arithmetic number, because the mean of its divisors is an integer number (1797984).

Almost surely, 219228055 is an apocalyptic number.

19228055 is a deficient number, since it is larger than the sum of its proper divisors (9539689).

19228055 is a wasteful number, since it uses less digits than its factorization.

19228055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49966.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 19228055 is about 4384.9806156926. The cubic root of 19228055 is about 267.9035397639.

The spelling of 19228055 in words is "nineteen million, two hundred twenty-eight thousand, fifty-five".

Divisors: 1 5 7 11 35 55 77 385 49943 249715 349601 549373 1748005 2746865 3845611 19228055