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19081028 = 227960383
BaseRepresentation
bin100100011001…
…0011101000100
31022220102020202
41020302131010
514341043103
61520550032
7321120551
oct110623504
938812222
1019081028
11a85294a
126482318
133c51065
142769a28
151a1d988
hex1232744

19081028 has 12 divisors (see below), whose sum is σ = 33815040. Its totient is φ = 9419592.

The previous prime is 19081019. The next prime is 19081033. The reversal of 19081028 is 82018091.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29876 + ... + 30507.

It is an arithmetic number, because the mean of its divisors is an integer number (2817920).

Almost surely, 219081028 is an apocalyptic number.

It is an amenable number.

19081028 is a deficient number, since it is larger than the sum of its proper divisors (14734012).

19081028 is a wasteful number, since it uses less digits than its factorization.

19081028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60466 (or 60464 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 19081028 is about 4368.1836041998. The cubic root of 19081028 is about 267.2189519169.

It can be divided in two parts, 190 and 81028, that added together give a palindrome (81218).

The spelling of 19081028 in words is "nineteen million, eighty-one thousand, twenty-eight".

Divisors: 1 2 4 79 158 316 60383 120766 241532 4770257 9540514 19081028