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27248985 = 325605533
BaseRepresentation
bin110011111110…
…0100101011001
31220021101120200
41213330211121
523433431420
62412012413
7450420051
oct147744531
956241520
1027248985
1114421625
129161109
135850a7a
143894561
1525d3b90
hex19fc959

27248985 has 12 divisors (see below), whose sum is σ = 47231652. Its totient is φ = 14532768.

The previous prime is 27248981. The next prime is 27248987. The reversal of 27248985 is 58984272.

It can be written as a sum of positive squares in 2 ways, for example, as 14653584 + 12595401 = 3828^2 + 3549^2 .

It is not a de Polignac number, because 27248985 - 22 = 27248981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 605533 = 27248985 / (2 + 7 + 2 + 4 + 8 + 9 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 27248985.

It is not an unprimeable number, because it can be changed into a prime (27248981) 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, 302722 + ... + 302811.

It is an arithmetic number, because the mean of its divisors is an integer number (3935971).

Almost surely, 227248985 is an apocalyptic number.

It is an amenable number.

27248985 is a deficient number, since it is larger than the sum of its proper divisors (19982667).

27248985 is a wasteful number, since it uses less digits than its factorization.

27248985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605544 (or 605541 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 27248985 is about 5220.0560341820. The cubic root of 27248985 is about 300.9193464624.

The spelling of 27248985 in words is "twenty-seven million, two hundred forty-eight thousand, nine hundred eighty-five".

Divisors: 1 3 5 9 15 45 605533 1816599 3027665 5449797 9082995 27248985