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189235486 = 21167312781
BaseRepresentation
bin10110100011110…
…00000100011110
3111012002011021201
423101320010132
5341421013421
630435550114
74455321646
oct1321700436
9435064251
10189235486
1197900470
125345b33a
133028877b
141b1bd526
151192eb91
hexb47811e

189235486 has 16 divisors (see below), whose sum is σ = 310142448. Its totient is φ = 85881600.

The previous prime is 189235471. The next prime is 189235507. The reversal of 189235486 is 684532981.

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 7 ways as a sum of consecutive naturals, for example, 8416 + ... + 21196.

It is an arithmetic number, because the mean of its divisors is an integer number (19383903).

Almost surely, 2189235486 is an apocalyptic number.

189235486 is a deficient number, since it is larger than the sum of its proper divisors (120906962).

189235486 is a wasteful number, since it uses less digits than its factorization.

189235486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13467.

The product of its digits is 414720, while the sum is 46.

The square root of 189235486 is about 13756.2889617804. The cubic root of 189235486 is about 574.1175990400.

The spelling of 189235486 in words is "one hundred eighty-nine million, two hundred thirty-five thousand, four hundred eighty-six".

Divisors: 1 2 11 22 673 1346 7403 12781 14806 25562 140591 281182 8601613 17203226 94617743 189235486