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12148817 = 157223347
BaseRepresentation
bin101110010110…
…000001010001
3211212020001012
4232112001101
511102230232
61112220305
7205156202
oct56260121
924766035
1012148817
11694864a
12409a695
132694965
1418835a9
1510ee9b2
hexb96051

12148817 has 8 divisors (see below), whose sum is σ = 12316416. Its totient is φ = 11982672.

The previous prime is 12148811. The next prime is 12148841. The reversal of 12148817 is 71884121.

12148817 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12148817 - 28 = 12148561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12148811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34838 + ... + 35184.

It is an arithmetic number, because the mean of its divisors is an integer number (1539552).

Almost surely, 212148817 is an apocalyptic number.

It is an amenable number.

12148817 is a deficient number, since it is larger than the sum of its proper divisors (167599).

12148817 is a wasteful number, since it uses less digits than its factorization.

12148817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727.

The product of its digits is 3584, while the sum is 32.

The square root of 12148817 is about 3485.5153134078. The cubic root of 12148817 is about 229.8853682079.

The spelling of 12148817 in words is "twelve million, one hundred forty-eight thousand, eight hundred seventeen".

Divisors: 1 157 223 347 35011 54479 77381 12148817