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19142793 = 3212791663
BaseRepresentation
bin100100100000…
…1100010001001
31100000112222100
41021001202021
514400032133
61522144013
7321465615
oct111014211
940015870
1019142793
11a89529a
1264b2009
133c731c7
142784345
151a31e13
hex1241889

19142793 has 12 divisors (see below), whose sum is σ = 27688960. Its totient is φ = 12744216.

The previous prime is 19142759. The next prime is 19142803. The reversal of 19142793 is 39724191.

It is not a de Polignac number, because 19142793 - 216 = 19077257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19142713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10680 + ... + 12342.

Almost surely, 219142793 is an apocalyptic number.

It is an amenable number.

19142793 is a deficient number, since it is larger than the sum of its proper divisors (8546167).

19142793 is a wasteful number, since it uses less digits than its factorization.

19142793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948 (or 2945 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 19142793 is about 4375.2477644129. The cubic root of 19142793 is about 267.5069692772.

The spelling of 19142793 in words is "nineteen million, one hundred forty-two thousand, seven hundred ninety-three".

Divisors: 1 3 9 1279 1663 3837 4989 11511 14967 2126977 6380931 19142793