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12030887 = 111093717
BaseRepresentation
bin101101111001…
…001110100111
3211122020021102
4231321032213
511034442022
61105510315
7204155321
oct55711647
924566242
1012030887
116877a90
12404239b
13265308b
141852611
1510c9a92
hexb793a7

12030887 has 4 divisors (see below), whose sum is σ = 13124616. Its totient is φ = 10937160.

The previous prime is 12030881. The next prime is 12030901. The reversal of 12030887 is 78803021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78803021 = 117163911.

It is a cyclic number.

It is not a de Polignac number, because 12030887 - 24 = 12030871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030881) 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, 546848 + ... + 546869.

It is an arithmetic number, because the mean of its divisors is an integer number (3281154).

Almost surely, 212030887 is an apocalyptic number.

12030887 is a deficient number, since it is larger than the sum of its proper divisors (1093729).

12030887 is a wasteful number, since it uses less digits than its factorization.

12030887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093728.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 12030887 is about 3468.5569045354. The cubic root of 12030887 is about 229.1391068272.

The spelling of 12030887 in words is "twelve million, thirty thousand, eight hundred eighty-seven".

Divisors: 1 11 1093717 12030887