Search a number
-
+
12354385 = 52470877
BaseRepresentation
bin101111001000…
…001101010001
3212020200000211
4233020031101
511130320020
61120444121
7210003421
oct57101521
925220024
1012354385
116a7903a
124179641
1327373b4
1418d8481
15114085a
hexbc8351

12354385 has 4 divisors (see below), whose sum is σ = 14825268. Its totient is φ = 9883504.

The previous prime is 12354379. The next prime is 12354413. The reversal of 12354385 is 58345321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58345321 = 103156591.

It can be written as a sum of positive squares in 2 ways, for example, as 1252161 + 11102224 = 1119^2 + 3332^2 .

It is a cyclic number.

It is not a de Polignac number, because 12354385 - 217 = 12223313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235434 + ... + 1235443.

It is an arithmetic number, because the mean of its divisors is an integer number (3706317).

Almost surely, 212354385 is an apocalyptic number.

It is an amenable number.

12354385 is a deficient number, since it is larger than the sum of its proper divisors (2470883).

12354385 is an equidigital number, since it uses as much as digits as its factorization.

12354385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470882.

The product of its digits is 14400, while the sum is 31.

The square root of 12354385 is about 3514.8805100601. The cubic root of 12354385 is about 231.1747395705.

The spelling of 12354385 in words is "twelve million, three hundred fifty-four thousand, three hundred eighty-five".

Divisors: 1 5 2470877 12354385