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12415045 = 52985621
BaseRepresentation
bin101111010111…
…000001000101
3212100202020111
4233113001011
511134240140
61122033021
7210345316
oct57270105
925322214
1012415045
11700a675
1241a8771
132758ba6
14191260d
1511537ea
hexbd7045

12415045 has 8 divisors (see below), whose sum is σ = 15411960. Its totient is φ = 9589440.

The previous prime is 12415043. The next prime is 12415093. The reversal of 12415045 is 54051421.

12415045 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3876961 + 8538084 = 1969^2 + 2922^2 .

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

It is not a de Polignac number, because 12415045 - 21 = 12415043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12415043) 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, 42666 + ... + 42955.

It is an arithmetic number, because the mean of its divisors is an integer number (1926495).

Almost surely, 212415045 is an apocalyptic number.

It is an amenable number.

12415045 is a deficient number, since it is larger than the sum of its proper divisors (2996915).

12415045 is an equidigital number, since it uses as much as digits as its factorization.

12415045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85655.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 12415045 is about 3523.4989711933. The cubic root of 12415045 is about 231.5524778132.

Adding to 12415045 its reverse (54051421), we get a palindrome (66466466).

The spelling of 12415045 in words is "twelve million, four hundred fifteen thousand, forty-five".

Divisors: 1 5 29 145 85621 428105 2483009 12415045