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12990333 = 331139681
BaseRepresentation
bin110001100011…
…011101111101
3220102222101110
4301203131331
511311142313
61142232233
7215262456
oct61433575
926388343
1012990333
117372914
124425679
1328ca9b5
141a2212d
151218ec3
hexc6377d

12990333 has 8 divisors (see below), whose sum is σ = 17879296. Its totient is φ = 8380800.

The previous prime is 12990323. The next prime is 12990361. The reversal of 12990333 is 33309921.

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

It is not a de Polignac number, because 12990333 - 26 = 12990269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12990333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12990323) 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, 69748 + ... + 69933.

It is an arithmetic number, because the mean of its divisors is an integer number (2234912).

Almost surely, 212990333 is an apocalyptic number.

It is an amenable number.

12990333 is a deficient number, since it is larger than the sum of its proper divisors (4888963).

12990333 is a wasteful number, since it uses less digits than its factorization.

12990333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139715.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 12990333 is about 3604.2104544546. The cubic root of 12990333 is about 235.0751713645.

The spelling of 12990333 in words is "twelve million, nine hundred ninety thousand, three hundred thirty-three".

Divisors: 1 3 31 93 139681 419043 4330111 12990333