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12890901 = 312593413
BaseRepresentation
bin110001001011…
…001100010101
3220020220222210
4301023030111
511300002101
61140144033
7214366542
oct61131425
926226883
1012890901
117305141
124398019
13289466a
1419d7bc9
1511e97d6
hexc4b315

12890901 has 8 divisors (see below), whose sum is σ = 17206560. Its totient is φ = 8584592.

The previous prime is 12890893. The next prime is 12890903. The reversal of 12890901 is 10909821.

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

It is a cyclic number.

It is not a de Polignac number, because 12890901 - 23 = 12890893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12890903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2071 + ... + 5483.

It is an arithmetic number, because the mean of its divisors is an integer number (2150820).

Almost surely, 212890901 is an apocalyptic number.

It is an amenable number.

12890901 is a deficient number, since it is larger than the sum of its proper divisors (4315659).

12890901 is a wasteful number, since it uses less digits than its factorization.

12890901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4675.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 12890901 is about 3590.3900902270. The cubic root of 12890901 is about 234.4738553298.

The spelling of 12890901 in words is "twelve million, eight hundred ninety thousand, nine hundred one".

Divisors: 1 3 1259 3413 3777 10239 4296967 12890901