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12495217 = 71993949
BaseRepresentation
bin101111101010…
…100101110001
3212111211012211
4233222211301
511144321332
61123452121
7211131130
oct57524561
925454184
1012495217
117064929
124227041
132786527
141933917
15116c447
hexbea971

12495217 has 8 divisors (see below), whose sum is σ = 15032000. Its totient is φ = 10146384.

The previous prime is 12495211. The next prime is 12495253. The reversal of 12495217 is 71259421.

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 12495217 - 27 = 12495089 is a prime.

It is a super-2 number, since 2×124952172 = 312260895754178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12495211) 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, 46842 + ... + 47107.

It is an arithmetic number, because the mean of its divisors is an integer number (1879000).

Almost surely, 212495217 is an apocalyptic number.

It is an amenable number.

12495217 is a deficient number, since it is larger than the sum of its proper divisors (2536783).

12495217 is an equidigital number, since it uses as much as digits as its factorization.

12495217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93975.

The product of its digits is 5040, while the sum is 31.

The square root of 12495217 is about 3534.8574228673. The cubic root of 12495217 is about 232.0498369451.

The spelling of 12495217 in words is "twelve million, four hundred ninety-five thousand, two hundred seventeen".

Divisors: 1 7 19 133 93949 657643 1785031 12495217