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12490461 = 321781637
BaseRepresentation
bin101111101001…
…011011011101
3212111120200200
4233221123131
511144143321
61123414113
7211111224
oct57513335
925446620
1012490461
1170612a5
124224339
132784309
141931cbb
15116ad26
hexbe96dd

12490461 has 12 divisors (see below), whose sum is σ = 19103292. Its totient is φ = 7837056.

The previous prime is 12490459. The next prime is 12490463. The reversal of 12490461 is 16409421.

12490461 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12490459) and next prime (12490463).

It can be written as a sum of positive squares in 2 ways, for example, as 9272025 + 3218436 = 3045^2 + 1794^2 .

It is not a de Polignac number, because 12490461 - 21 = 12490459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12490463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40666 + ... + 40971.

It is an arithmetic number, because the mean of its divisors is an integer number (1591941).

Almost surely, 212490461 is an apocalyptic number.

It is an amenable number.

12490461 is a deficient number, since it is larger than the sum of its proper divisors (6612831).

12490461 is a wasteful number, since it uses less digits than its factorization.

12490461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81660 (or 81657 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12490461 is about 3534.1846301516. The cubic root of 12490461 is about 232.0203918362.

Adding to 12490461 its reverse (16409421), we get a palindrome (28899882).

The spelling of 12490461 in words is "twelve million, four hundred ninety thousand, four hundred sixty-one".

Divisors: 1 3 9 17 51 153 81637 244911 734733 1387829 4163487 12490461