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152206223 = 1311708171
BaseRepresentation
bin10010001001001…
…11101110001111
3101121101212200112
421010213232033
5302431044343
623034150235
73525505631
oct1104475617
9347355615
10152206223
1178a09874
1242b8237b
13256c2170
1416300a51
15d568218
hex9127b8f

152206223 has 4 divisors (see below), whose sum is σ = 163914408. Its totient is φ = 140498040.

The previous prime is 152206217. The next prime is 152206231. The reversal of 152206223 is 322602251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322602251 = 1718976603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-152206223 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 (152206213) 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, 5854073 + ... + 5854098.

It is an arithmetic number, because the mean of its divisors is an integer number (40978602).

Almost surely, 2152206223 is an apocalyptic number.

152206223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

152206223 is a deficient number, since it is larger than the sum of its proper divisors (11708185).

152206223 is a wasteful number, since it uses less digits than its factorization.

152206223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11708184.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 152206223 is about 12337.1886181577. The cubic root of 152206223 is about 533.9215740942.

Adding to 152206223 its reverse (322602251), we get a palindrome (474808474).

The spelling of 152206223 in words is "one hundred fifty-two million, two hundred six thousand, two hundred twenty-three".

Divisors: 1 13 11708171 152206223