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12750023 = 1113163547
BaseRepresentation
bin110000101000…
…110011000111
3212222202202002
4300220303013
511231000043
61133135515
7213242036
oct60506307
925882662
1012750023
117219310
12432a59b
1328454c0
14199c71d
1511bcbb8
hexc28cc7

12750023 has 16 divisors (see below), whose sum is σ = 15098496. Its totient is φ = 10614240.

The previous prime is 12750011. The next prime is 12750071. The reversal of 12750023 is 32005721.

Adding to 12750023 its reverse (32005721), we get a palindrome (44755744).

It is not a de Polignac number, because 12750023 - 28 = 12749767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12749977 and 12750004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12750223) 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 15 ways as a sum of consecutive naturals, for example, 23036 + ... + 23582.

It is an arithmetic number, because the mean of its divisors is an integer number (943656).

Almost surely, 212750023 is an apocalyptic number.

12750023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12750023 is a deficient number, since it is larger than the sum of its proper divisors (2348473).

12750023 is a wasteful number, since it uses less digits than its factorization.

12750023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 12750023 is about 3570.7174349142. The cubic root of 12750023 is about 233.6165768929.

The spelling of 12750023 in words is "twelve million, seven hundred fifty thousand, twenty-three".

Divisors: 1 11 13 143 163 547 1793 2119 6017 7111 23309 78221 89161 980771 1159093 12750023