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19020688274 = 2779149115421
BaseRepresentation
bin10001101101101110…
…001010101110010010
31211002120210002010002
4101231232022232102
5302423244011044
612423223210002
71242231116450
oct215556125622
954076702102
1019020688274
118080756695
123829ba6902
131a41832243
14cc62019d0
15764cc474e
hex46db8ab92

19020688274 has 32 divisors (see below), whose sum is σ = 33241536000. Its totient is φ = 7994450880.

The previous prime is 19020688237. The next prime is 19020688301. The reversal of 19020688274 is 47288602091.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107084 + ... + 222504.

It is an arithmetic number, because the mean of its divisors is an integer number (1038798000).

Almost surely, 219020688274 is an apocalyptic number.

19020688274 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19020688274 is a deficient number, since it is larger than the sum of its proper divisors (14220847726).

19020688274 is a wasteful number, since it uses less digits than its factorization.

19020688274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115658.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 19020688274 in words is "nineteen billion, twenty million, six hundred eighty-eight thousand, two hundred seventy-four".

Divisors: 1 2 7 14 79 149 158 298 553 1043 1106 2086 11771 23542 82397 115421 164794 230842 807947 1615894 9118259 17197729 18236518 34395458 63827813 120384103 127655626 240768206 1358620591 2717241182 9510344137 19020688274