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12750219 = 321416691
BaseRepresentation
bin110000101000…
…110110001011
3212222210000100
4300220312023
511231001334
61133140443
7213242436
oct60506613
925883010
1012750219
117219479
12432a723
132845611
14199c81d
1511bcc99
hexc28d8b

12750219 has 6 divisors (see below), whose sum is σ = 18416996. Its totient is φ = 8500140.

The previous prime is 12750209. The next prime is 12750223. The reversal of 12750219 is 91205721.

It is not a de Polignac number, because 12750219 - 27 = 12750091 is a prime.

It is a super-2 number, since 2×127502192 = 325136169095922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12750192 and 12750201.

It is not an unprimeable number, because it can be changed into a prime (12750209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708337 + ... + 708354.

Almost surely, 212750219 is an apocalyptic number.

12750219 is a deficient number, since it is larger than the sum of its proper divisors (5666777).

12750219 is a wasteful number, since it uses less digits than its factorization.

12750219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416697 (or 1416694 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 12750219 is about 3570.7448802736. The cubic root of 12750219 is about 233.6177739787.

The spelling of 12750219 in words is "twelve million, seven hundred fifty thousand, two hundred nineteen".

Divisors: 1 3 9 1416691 4250073 12750219