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12480397 = 171938639
BaseRepresentation
bin101111100110…
…111110001101
3212111001212221
4233212332031
511143333042
61123255341
7211036666
oct57467615
925431787
1012480397
117054786
12421a551
13277c867
14192c36d
151167d67
hexbe6f8d

12480397 has 8 divisors (see below), whose sum is σ = 13910400. Its totient is φ = 11127744.

The previous prime is 12480371. The next prime is 12480437. The reversal of 12480397 is 79308421.

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 12480397 - 27 = 12480269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12480317) 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, 18997 + ... + 19642.

It is an arithmetic number, because the mean of its divisors is an integer number (1738800).

Almost surely, 212480397 is an apocalyptic number.

12480397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12480397 is a deficient number, since it is larger than the sum of its proper divisors (1430003).

12480397 is a wasteful number, since it uses less digits than its factorization.

12480397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38675.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 12480397 is about 3532.7605353321. The cubic root of 12480397 is about 231.9580594518.

The spelling of 12480397 in words is "twelve million, four hundred eighty thousand, three hundred ninety-seven".

Divisors: 1 17 19 323 38639 656863 734141 12480397