[go: up one dir, main page]

Search a number
-
+
28410839 is a prime number
BaseRepresentation
bin110110001100…
…0001111010111
31222110102100022
41230120033113
524233121324
62452535355
7463326302
oct154301727
958412308
1028410839
1115045536
12962155b
135b69862
143ab7b39
15276305e
hex1b183d7

28410839 has 2 divisors, whose sum is σ = 28410840. Its totient is φ = 28410838.

The previous prime is 28410821. The next prime is 28410841. The reversal of 28410839 is 93801482.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28410839 - 28 = 28410583 is a prime.

It is a Sophie Germain prime.

Together with 28410841, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28410799 and 28410808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28470839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14205419 + 14205420.

It is an arithmetic number, because the mean of its divisors is an integer number (14205420).

Almost surely, 228410839 is an apocalyptic number.

28410839 is a deficient number, since it is larger than the sum of its proper divisors (1).

28410839 is an equidigital number, since it uses as much as digits as its factorization.

28410839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28410839 is about 5330.1818918307. The cubic root of 28410839 is about 305.1368695028.

The spelling of 28410839 in words is "twenty-eight million, four hundred ten thousand, eight hundred thirty-nine".