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30013229 = 231304923
BaseRepresentation
bin111001001111…
…1011100101101
32002110211102002
41302133130231
530140410404
62551142045
7513052061
oct162373455
962424362
1030013229
1115a3a424
12a074925
1362ab00c
143db3aa1
15297cc1e
hex1c9f72d

30013229 has 4 divisors (see below), whose sum is σ = 31318176. Its totient is φ = 28708284.

The previous prime is 30013201. The next prime is 30013283. The reversal of 30013229 is 92231003.

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 30013229 - 220 = 28964653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30013229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013129) 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, 652439 + ... + 652484.

It is an arithmetic number, because the mean of its divisors is an integer number (7829544).

Almost surely, 230013229 is an apocalyptic number.

It is an amenable number.

30013229 is a deficient number, since it is larger than the sum of its proper divisors (1304947).

30013229 is a wasteful number, since it uses less digits than its factorization.

30013229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304946.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 30013229 is about 5478.4330789013. The cubic root of 30013229 is about 310.7689167490.

The spelling of 30013229 in words is "thirty million, thirteen thousand, two hundred twenty-nine".

Divisors: 1 23 1304923 30013229