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12750087 = 37607147
BaseRepresentation
bin110000101000…
…110100000111
3212222202211110
4300220310013
511231000322
61133140103
7213242160
oct60506407
925882743
1012750087
117219369
12432a633
13284553c
14199c767
1511bcc0c
hexc28d07

12750087 has 8 divisors (see below), whose sum is σ = 19428736. Its totient is φ = 7285752.

The previous prime is 12750071. The next prime is 12750091. The reversal of 12750087 is 78005721.

It is a happy number.

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

It is not a de Polignac number, because 12750087 - 24 = 12750071 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 (12751087) 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, 303553 + ... + 303594.

It is an arithmetic number, because the mean of its divisors is an integer number (2428592).

Almost surely, 212750087 is an apocalyptic number.

12750087 is a deficient number, since it is larger than the sum of its proper divisors (6678649).

12750087 is an equidigital number, since it uses as much as digits as its factorization.

12750087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607157.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 12750087 is about 3570.7263966874. The cubic root of 12750087 is about 233.6169677794.

The spelling of 12750087 in words is "twelve million, seven hundred fifty thousand, eighty-seven".

Divisors: 1 3 7 21 607147 1821441 4250029 12750087