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19008190 = 257924061
BaseRepresentation
bin100100010000…
…0101010111110
31022202201100001
41020200222332
514331230230
61515224514
7320365315
oct110405276
938681301
1019008190
11a803153
12644813a
133c26b66
14274b27c
151a070ca
hex1220abe

19008190 has 16 divisors (see below), whose sum is σ = 34649280. Its totient is φ = 7506720.

The previous prime is 19008181. The next prime is 19008221. The reversal of 19008190 is 9180091.

It is a super-2 number, since 2×190081902 = 722622574152200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11241 + ... + 12820.

It is an arithmetic number, because the mean of its divisors is an integer number (2165580).

Almost surely, 219008190 is an apocalyptic number.

19008190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19008190 is a deficient number, since it is larger than the sum of its proper divisors (15641090).

19008190 is a wasteful number, since it uses less digits than its factorization.

19008190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24147.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 19008190 is about 4359.8382997538. The cubic root of 19008190 is about 266.8785000830.

The spelling of 19008190 in words is "nineteen million, eight thousand, one hundred ninety".

Divisors: 1 2 5 10 79 158 395 790 24061 48122 120305 240610 1900819 3801638 9504095 19008190