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19372132 = 2213228657
BaseRepresentation
bin100100111100…
…1100001100100
31100110012120101
41021321201210
514424402012
61531113444
7323442343
oct111714144
940405511
1019372132
11aa3162a
1265a2884
134023700
142803b5a
151a79d57
hex1279864

19372132 has 18 divisors (see below), whose sum is σ = 36710898. Its totient is φ = 8940672.

The previous prime is 19372123. The next prime is 19372139. The reversal of 19372132 is 23127391.

It can be written as a sum of positive squares in 3 ways, for example, as 484416 + 18887716 = 696^2 + 4346^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19372132.

It is not an unprimeable number, because it can be changed into a prime (19372139) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 13653 + ... + 15004.

Almost surely, 219372132 is an apocalyptic number.

It is an amenable number.

19372132 is a deficient number, since it is larger than the sum of its proper divisors (17338766).

19372132 is a wasteful number, since it uses less digits than its factorization.

19372132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28687 (or 28672 counting only the distinct ones).

The product of its digits is 2268, while the sum is 28.

The square root of 19372132 is about 4401.3784204497. The cubic root of 19372132 is about 268.5710146257.

It can be divided in two parts, 193721 and 32, that added together give a triangular number (193753 = T622).

The spelling of 19372132 in words is "nineteen million, three hundred seventy-two thousand, one hundred thirty-two".

Divisors: 1 2 4 13 26 52 169 338 676 28657 57314 114628 372541 745082 1490164 4843033 9686066 19372132