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12530135 = 510912297
BaseRepresentation
bin101111110011…
…000111010111
3212120121010002
4233303013113
511201431020
61124321515
7211335002
oct57630727
925517102
1012530135
117089092
12424329b
1327993a7
141942539
151177975
hexbf31d7

12530135 has 8 divisors (see below), whose sum is σ = 15056496. Its totient is φ = 10010560.

The previous prime is 12530123. The next prime is 12530137. The reversal of 12530135 is 53103521.

12530135 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12530135 - 212 = 12526039 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 (12530137) 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, 4307 + ... + 6603.

It is an arithmetic number, because the mean of its divisors is an integer number (1882062).

Almost surely, 212530135 is an apocalyptic number.

12530135 is a deficient number, since it is larger than the sum of its proper divisors (2526361).

12530135 is a wasteful number, since it uses less digits than its factorization.

12530135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 12530135 is about 3539.7930730482. The cubic root of 12530135 is about 232.2657910498.

Adding to 12530135 its reverse (53103521), we get a palindrome (65633656).

The spelling of 12530135 in words is "twelve million, five hundred thirty thousand, one hundred thirty-five".

Divisors: 1 5 1091 2297 5455 11485 2506027 12530135