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12492297 = 321781649
BaseRepresentation
bin101111101001…
…111000001001
3212111200012200
4233221320021
511144223142
61123430413
7211116456
oct57517011
925450180
1012492297
117062714
124225409
1327850bc
14193282d
15116b64c
hexbe9e09

12492297 has 12 divisors (see below), whose sum is σ = 19106100. Its totient is φ = 7838208.

The previous prime is 12492283. The next prime is 12492299. The reversal of 12492297 is 79229421.

12492297 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10169721 + 2322576 = 3189^2 + 1524^2 .

It is not a de Polignac number, because 12492297 - 24 = 12492281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12492299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40672 + ... + 40977.

It is an arithmetic number, because the mean of its divisors is an integer number (1592175).

Almost surely, 212492297 is an apocalyptic number.

12492297 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12492297 is a deficient number, since it is larger than the sum of its proper divisors (6613803).

12492297 is a wasteful number, since it uses less digits than its factorization.

12492297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81672 (or 81669 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 12492297 is about 3534.4443693458. Note that the first 3 decimals coincide. The cubic root of 12492297 is about 232.0317596731.

The spelling of 12492297 in words is "twelve million, four hundred ninety-two thousand, two hundred ninety-seven".

Divisors: 1 3 9 17 51 153 81649 244947 734841 1388033 4164099 12492297