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12250961 = 33736353
BaseRepresentation
bin101110101110…
…111101010001
3212001102011022
4232232331101
511114012321
61114325225
7206063042
oct56567521
925042138
1012250961
116a08368
124129815
1326cc2b8
1418ac8c9
15111edab
hexbaef51

12250961 has 4 divisors (see below), whose sum is σ = 12287652. Its totient is φ = 12214272.

The previous prime is 12250943. The next prime is 12250967. The reversal of 12250961 is 16905221.

12250961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16905221 = 29357697.

It can be written as a sum of positive squares in 2 ways, for example, as 3400336 + 8850625 = 1844^2 + 2975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12250961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12250961.

It is not an unprimeable number, because it can be changed into a prime (12250967) 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, 17840 + ... + 18513.

It is an arithmetic number, because the mean of its divisors is an integer number (3071913).

Almost surely, 212250961 is an apocalyptic number.

It is an amenable number.

12250961 is a deficient number, since it is larger than the sum of its proper divisors (36691).

12250961 is an equidigital number, since it uses as much as digits as its factorization.

12250961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36690.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12250961 is about 3500.1372830219. The cubic root of 12250961 is about 230.5278425123.

The spelling of 12250961 in words is "twelve million, two hundred fifty thousand, nine hundred sixty-one".

Divisors: 1 337 36353 12250961