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19140793 = 717239673
BaseRepresentation
bin100100100000…
…1000010111001
31100000110020021
41021001002321
514400001133
61522130441
7321460030
oct111010271
940013207
1019140793
11a893841
1264b0a21
133c72319
142783717
151a3152d
hex12410b9

19140793 has 16 divisors (see below), whose sum is σ = 23293440. Its totient is φ = 15353856.

The previous prime is 19140787. The next prime is 19140817. The reversal of 19140793 is 39704191.

It is a de Polignac number, because none of the positive numbers 2k-19140793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19140743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28105 + ... + 28777.

It is an arithmetic number, because the mean of its divisors is an integer number (1455840).

Almost surely, 219140793 is an apocalyptic number.

It is an amenable number.

19140793 is a deficient number, since it is larger than the sum of its proper divisors (4152647).

19140793 is a wasteful number, since it uses less digits than its factorization.

19140793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 19140793 is about 4375.0191999579. The cubic root of 19140793 is about 267.4976527584.

The spelling of 19140793 in words is "nineteen million, one hundred forty thousand, seven hundred ninety-three".

Divisors: 1 7 17 119 239 673 1673 4063 4711 11441 28441 80087 160847 1125929 2734399 19140793