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28310241 = 39436747
BaseRepresentation
bin110101111111…
…1101011100001
31222021022100110
41223333223201
524221411431
62450441533
7462430101
oct153775341
958238313
1028310241
1114a869a3
1295932a9
135b32b2b
143a8d201
152743346
hex1affae1

28310241 has 4 divisors (see below), whose sum is σ = 37746992. Its totient is φ = 18873492.

The previous prime is 28310201. The next prime is 28310251. The reversal of 28310241 is 14201382.

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 not a de Polignac number, because 28310241 - 210 = 28309217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28310201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4718371 + ... + 4718376.

It is an arithmetic number, because the mean of its divisors is an integer number (9436748).

Almost surely, 228310241 is an apocalyptic number.

It is an amenable number.

28310241 is a deficient number, since it is larger than the sum of its proper divisors (9436751).

28310241 is an equidigital number, since it uses as much as digits as its factorization.

28310241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9436750.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 28310241 is about 5320.7368850564. The cubic root of 28310241 is about 304.7762974900.

The spelling of 28310241 in words is "twenty-eight million, three hundred ten thousand, two hundred forty-one".

Divisors: 1 3 9436747 28310241