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19696285 = 572174729
BaseRepresentation
bin100101100100…
…0101010011101
31101001200020001
41023020222131
520020240120
61542054301
7326262400
oct113105235
941050201
1019696285
1110133124
12671a391
13410810b
142889d37
151ae0e0a
hex12c8a9d

19696285 has 24 divisors (see below), whose sum is σ = 29117880. Its totient is φ = 12708864.

The previous prime is 19696273. The next prime is 19696291. The reversal of 19696285 is 58269691.

It can be written as a sum of positive squares in 4 ways, for example, as 432964 + 19263321 = 658^2 + 4389^2 .

It is not a de Polignac number, because 19696285 - 217 = 19565213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1801 + ... + 6529.

It is an arithmetic number, because the mean of its divisors is an integer number (1213245).

Almost surely, 219696285 is an apocalyptic number.

It is an amenable number.

19696285 is a deficient number, since it is larger than the sum of its proper divisors (9421595).

19696285 is a wasteful number, since it uses less digits than its factorization.

19696285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4765 (or 4758 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 19696285 is about 4438.0496842645. The cubic root of 19696285 is about 270.0607316517.

The spelling of 19696285 in words is "nineteen million, six hundred ninety-six thousand, two hundred eighty-five".

Divisors: 1 5 7 17 35 49 85 119 245 595 833 4165 4729 23645 33103 80393 165515 231721 401965 562751 1158605 2813755 3939257 19696285