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12488645 = 513192133
BaseRepresentation
bin101111101000…
…111111000101
3212111111012102
4233220333011
511144114040
61123401445
7211103021
oct57507705
925444172
1012488645
11705a9a4
124223285
132783540
141931381
15116a515
hexbe8fc5

12488645 has 8 divisors (see below), whose sum is σ = 16139256. Its totient is φ = 9222336.

The previous prime is 12488633. The next prime is 12488657. The reversal of 12488645 is 54688421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12488633) and next prime (12488657).

It can be written as a sum of positive squares in 4 ways, for example, as 2666689 + 9821956 = 1633^2 + 3134^2 .

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 12488645 - 28 = 12488389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12488599 and 12488608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96002 + ... + 96131.

It is an arithmetic number, because the mean of its divisors is an integer number (2017407).

Almost surely, 212488645 is an apocalyptic number.

It is an amenable number.

12488645 is a deficient number, since it is larger than the sum of its proper divisors (3650611).

12488645 is a wasteful number, since it uses less digits than its factorization.

12488645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192151.

The product of its digits is 61440, while the sum is 38.

The square root of 12488645 is about 3533.9277015808. The cubic root of 12488645 is about 232.0091467361.

The spelling of 12488645 in words is "twelve million, four hundred eighty-eight thousand, six hundred forty-five".

Divisors: 1 5 13 65 192133 960665 2497729 12488645