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12545340 = 2235209089
BaseRepresentation
bin101111110110…
…110100111100
3212121100222020
4233312310330
511202422330
61124520140
7211430223
oct57666474
925540866
1012545340
117099555
124250050
1327a32a2
141947cba
15117c210
hexbf6d3c

12545340 has 24 divisors (see below), whose sum is σ = 35127120. Its totient is φ = 3345408.

The previous prime is 12545333. The next prime is 12545341. The reversal of 12545340 is 4354521.

It is a self number, because there is not a number n which added to its sum of digits gives 12545340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545341) 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, 104485 + ... + 104604.

It is an arithmetic number, because the mean of its divisors is an integer number (1463630).

Almost surely, 212545340 is an apocalyptic number.

12545340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12545340 is an abundant number, since it is smaller than the sum of its proper divisors (22581780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12545340 is a wasteful number, since it uses less digits than its factorization.

12545340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209101 (or 209099 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 12545340 is about 3541.9401463040. The cubic root of 12545340 is about 232.3597026161.

Adding to 12545340 its reverse (4354521), we get a palindrome (16899861).

The spelling of 12545340 in words is "twelve million, five hundred forty-five thousand, three hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 209089 418178 627267 836356 1045445 1254534 2090890 2509068 3136335 4181780 6272670 12545340