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27543042 = 23212372
BaseRepresentation
bin110100100010…
…0011000000010
31220211022221200
41221010120002
524022334132
62422202030
7453053262
oct151043002
956738850
1027543042
111460254a
129283316
135924877
14392d7a2
152640d7c
hex1a44602

27543042 has 18 divisors (see below), whose sum is σ = 59724873. Its totient is φ = 9173592.

The previous prime is 27543041. The next prime is 27543049. The reversal of 27543042 is 24034572.

It can be written as a sum of positive squares in 2 ways, for example, as 25613721 + 1929321 = 5061^2 + 1389^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅BA, here for A=2, B=3711.

It is a super-2 number, since 2×275430422 = 1517238325227528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27542997 and 27543015.

It is not an unprimeable number, because it can be changed into a prime (27543041) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21648 + ... + 22884.

Almost surely, 227543042 is an apocalyptic number.

27543042 is an abundant number, since it is smaller than the sum of its proper divisors (32181831).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27543042 is an equidigital number, since it uses as much as digits as its factorization.

27543042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 27543042 is about 5248.1465299666. The cubic root of 27543042 is about 301.9979313631.

The spelling of 27543042 in words is "twenty-seven million, five hundred forty-three thousand, forty-two".

Divisors: 1 2 3 6 9 18 1237 2474 3711 7422 11133 22266 1530169 3060338 4590507 9181014 13771521 27543042