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29130013 = 112648183
BaseRepresentation
bin110111100011…
…1110100011101
32000210221212101
41233013310131
524424130023
62520205101
7502413103
oct157076435
960727771
1029130013
11154968a0
129909791
13605bcc3
143c23c73
1528561ad
hex1bc7d1d

29130013 has 4 divisors (see below), whose sum is σ = 31778208. Its totient is φ = 26481820.

The previous prime is 29129999. The next prime is 29130041. The reversal of 29130013 is 31003192.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29130013 - 25 = 29129981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29130043) 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, 1324081 + ... + 1324102.

It is an arithmetic number, because the mean of its divisors is an integer number (7944552).

Almost surely, 229130013 is an apocalyptic number.

It is an amenable number.

29130013 is a deficient number, since it is larger than the sum of its proper divisors (2648195).

29130013 is a wasteful number, since it uses less digits than its factorization.

29130013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648194.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 29130013 is about 5397.2227117287. Note that the first 3 decimals coincide. The cubic root of 29130013 is about 307.6901258836.

The spelling of 29130013 in words is "twenty-nine million, one hundred thirty thousand, thirteen".

Divisors: 1 11 2648183 29130013