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12530806 = 225724379
BaseRepresentation
bin101111110011…
…010001110110
3212120122000221
4233303101312
511201441211
61124324554
7211336651
oct57632166
925518027
1012530806
117089642
12424375a
1327997a2
141942898
151177c71
hexbf3476

12530806 has 8 divisors (see below), whose sum is σ = 18870120. Its totient is φ = 6240768.

The previous prime is 12530801. The next prime is 12530807. The reversal of 12530806 is 60803521.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530801) 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, 11676 + ... + 12703.

It is an arithmetic number, because the mean of its divisors is an integer number (2358765).

Almost surely, 212530806 is an apocalyptic number.

12530806 is a deficient number, since it is larger than the sum of its proper divisors (6339314).

12530806 is a wasteful number, since it uses less digits than its factorization.

12530806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24638.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 12530806 is about 3539.8878513309. The cubic root of 12530806 is about 232.2699369898.

The spelling of 12530806 in words is "twelve million, five hundred thirty thousand, eight hundred six".

Divisors: 1 2 257 514 24379 48758 6265403 12530806