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30132223 = 112739293
BaseRepresentation
bin111001011110…
…0011111111111
32002200212122021
41302330133333
530203212343
62553501011
7514056022
oct162743777
962625567
1030132223
1116010870
12a111767
136320224
1440051b9
1529a30ed
hex1cbc7ff

30132223 has 4 divisors (see below), whose sum is σ = 32871528. Its totient is φ = 27392920.

The previous prime is 30132209. The next prime is 30132251. The reversal of 30132223 is 32223103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32223103 = 112929373.

It is a cyclic number.

It is not a de Polignac number, because 30132223 - 29 = 30131711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30132197 and 30132206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30132203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1369636 + ... + 1369657.

It is an arithmetic number, because the mean of its divisors is an integer number (8217882).

Almost surely, 230132223 is an apocalyptic number.

30132223 is a deficient number, since it is larger than the sum of its proper divisors (2739305).

30132223 is a wasteful number, since it uses less digits than its factorization.

30132223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739304.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30132223 is about 5489.2825578576. The cubic root of 30132223 is about 311.1790789096.

Adding to 30132223 its reverse (32223103), we get a palindrome (62355326).

The spelling of 30132223 in words is "thirty million, one hundred thirty-two thousand, two hundred twenty-three".

Divisors: 1 11 2739293 30132223