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12030907 = 71718701
BaseRepresentation
bin101101111001…
…001110111011
3211122020022011
4231321032323
511034442112
61105510351
7204155350
oct55711673
924566264
1012030907
116877aa9
1240423b7
1326530a5
141852627
1510c9aa7
hexb793bb

12030907 has 4 divisors (see below), whose sum is σ = 13749616. Its totient is φ = 10312200.

The previous prime is 12030901. The next prime is 12030913. The reversal of 12030907 is 70903021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70903021 = 710129003.

It is an interprime number because it is at equal distance from previous prime (12030901) and next prime (12030913).

It is a cyclic number.

It is not a de Polignac number, because 12030907 - 27 = 12030779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12030901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859344 + ... + 859357.

It is an arithmetic number, because the mean of its divisors is an integer number (3437404).

Almost surely, 212030907 is an apocalyptic number.

12030907 is a deficient number, since it is larger than the sum of its proper divisors (1718709).

12030907 is an equidigital number, since it uses as much as digits as its factorization.

12030907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718708.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 12030907 is about 3468.5597875775. The cubic root of 12030907 is about 229.1392337998.

Adding to 12030907 its reverse (70903021), we get a palindrome (82933928).

The spelling of 12030907 in words is "twelve million, thirty thousand, nine hundred seven".

Divisors: 1 7 1718701 12030907