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12544093 = 53236681
BaseRepresentation
bin101111110110…
…100001011101
3212121022021001
4233312201131
511202402333
61124510301
7211423462
oct57664135
925538231
1012544093
117098621
12424b391
1327a2853
141947669
15117bb7d
hexbf685d

12544093 has 4 divisors (see below), whose sum is σ = 12780828. Its totient is φ = 12307360.

The previous prime is 12544033. The next prime is 12544097. The reversal of 12544093 is 39044521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39044521 = 373104677.

It can be written as a sum of positive squares in 2 ways, for example, as 4826809 + 7717284 = 2197^2 + 2778^2 .

It is a cyclic number.

It is not a de Polignac number, because 12544093 - 217 = 12413021 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 (12544097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118288 + ... + 118393.

It is an arithmetic number, because the mean of its divisors is an integer number (3195207).

Almost surely, 212544093 is an apocalyptic number.

It is an amenable number.

12544093 is a deficient number, since it is larger than the sum of its proper divisors (236735).

12544093 is an equidigital number, since it uses as much as digits as its factorization.

12544093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236734.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 12544093 is about 3541.7641084635. The cubic root of 12544093 is about 232.3520035515.

The spelling of 12544093 in words is "twelve million, five hundred forty-four thousand, ninety-three".

Divisors: 1 53 236681 12544093