Search a number
-
+
12505293 = 332915971
BaseRepresentation
bin101111101101…
…000011001101
3212112100001000
4233231003031
511200132133
61124010513
7211202403
oct57550315
925470030
1012505293
117071459
124230a39
13278aca8
141937473
151170413
hexbed0cd

12505293 has 16 divisors (see below), whose sum is σ = 19166400. Its totient is φ = 8048880.

The previous prime is 12505291. The next prime is 12505313. The reversal of 12505293 is 39250521.

It is not a de Polignac number, because 12505293 - 21 = 12505291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7203 + ... + 8768.

It is an arithmetic number, because the mean of its divisors is an integer number (1197900).

Almost surely, 212505293 is an apocalyptic number.

It is an amenable number.

12505293 is a deficient number, since it is larger than the sum of its proper divisors (6661107).

12505293 is a wasteful number, since it uses less digits than its factorization.

12505293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16009 (or 16003 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 12505293 is about 3536.2823699473. The cubic root of 12505293 is about 232.1121942977.

The spelling of 12505293 in words is "twelve million, five hundred five thousand, two hundred ninety-three".

Divisors: 1 3 9 27 29 87 261 783 15971 47913 143739 431217 463159 1389477 4168431 12505293