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28062131 is a prime number
BaseRepresentation
bin110101100001…
…1000110110011
31221210201000012
41223003012303
524140442011
62441245135
7460344536
oct153030663
957721005
1028062131
1114927549
1294937ab
135a76c16
143a26a1d
1526e4a8b
hex1ac31b3

28062131 has 2 divisors, whose sum is σ = 28062132. Its totient is φ = 28062130.

The previous prime is 28062119. The next prime is 28062193. The reversal of 28062131 is 13126082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28062131 - 214 = 28045747 is a prime.

It is a super-2 number, since 2×280621312 = 1574966392522322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28062097 and 28062106.

It is not a weakly prime, because it can be changed into another prime (28062731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14031065 + 14031066.

It is an arithmetic number, because the mean of its divisors is an integer number (14031066).

Almost surely, 228062131 is an apocalyptic number.

28062131 is a deficient number, since it is larger than the sum of its proper divisors (1).

28062131 is an equidigital number, since it uses as much as digits as its factorization.

28062131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 28062131 is about 5297.3701966164. The cubic root of 28062131 is about 303.8833340129.

The spelling of 28062131 in words is "twenty-eight million, sixty-two thousand, one hundred thirty-one".