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27493029 = 3217179693
BaseRepresentation
bin110100011100…
…0001010100101
31220201210100100
41220320022211
524014234104
62421134313
7452454414
oct150701245
956653310
1027493029
1114578a13
12925a399
135907b85
14391947b
152631139
hex1a382a5

27493029 has 12 divisors (see below), whose sum is σ = 42048396. Its totient is φ = 17250432.

The previous prime is 27493021. The next prime is 27493031. The reversal of 27493029 is 92039472.

It can be written as a sum of positive squares in 2 ways, for example, as 13068225 + 14424804 = 3615^2 + 3798^2 .

It is not a de Polignac number, because 27493029 - 23 = 27493021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27492984 and 27493002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27493021) 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 11 ways as a sum of consecutive naturals, for example, 89694 + ... + 89999.

It is an arithmetic number, because the mean of its divisors is an integer number (3504033).

Almost surely, 227493029 is an apocalyptic number.

It is an amenable number.

27493029 is a deficient number, since it is larger than the sum of its proper divisors (14555367).

27493029 is a wasteful number, since it uses less digits than its factorization.

27493029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179716 (or 179713 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 27493029 is about 5243.3795399532. The cubic root of 27493029 is about 301.8150300738.

It can be divided in two parts, 2749 and 3029, that added together give a triangular number (5778 = T107).

The spelling of 27493029 in words is "twenty-seven million, four hundred ninety-three thousand, twenty-nine".

Divisors: 1 3 9 17 51 153 179693 539079 1617237 3054781 9164343 27493029