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28390259 is a prime number
BaseRepresentation
bin110110001001…
…1001101110011
31222102101010002
41230103031303
524231442014
62452300215
7463212302
oct154231563
958371102
1028390259
1115031027
12961166b
135b60391
143ab0439
15275bdde
hex1b13373

28390259 has 2 divisors, whose sum is σ = 28390260. Its totient is φ = 28390258.

The previous prime is 28390253. The next prime is 28390267. The reversal of 28390259 is 95209382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28390259 - 28 = 28390003 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28390253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14195129 + 14195130.

It is an arithmetic number, because the mean of its divisors is an integer number (14195130).

Almost surely, 228390259 is an apocalyptic number.

28390259 is a deficient number, since it is larger than the sum of its proper divisors (1).

28390259 is an equidigital number, since it uses as much as digits as its factorization.

28390259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 28390259 is about 5328.2510263688. The cubic root of 28390259 is about 305.0631742291.

The spelling of 28390259 in words is "twenty-eight million, three hundred ninety thousand, two hundred fifty-nine".