Search a number
-
+
1814401 = 2378887
BaseRepresentation
bin110111010111110000001
310102011220001
412322332001
5431030101
6102520001
721264541
oct6727601
93364801
101814401
11102a206
12736001
134b6b14
14353321
1525c901
hex1baf81

1814401 has 4 divisors (see below), whose sum is σ = 1893312. Its totient is φ = 1735492.

The previous prime is 1814383. The next prime is 1814413. The reversal of 1814401 is 1044181.

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 a cyclic number.

It is not a de Polignac number, because 1814401 - 213 = 1806209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1814431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39421 + ... + 39466.

It is an arithmetic number, because the mean of its divisors is an integer number (473328).

21814401 is an apocalyptic number.

It is an amenable number.

1814401 is a deficient number, since it is larger than the sum of its proper divisors (78911).

1814401 is an equidigital number, since it uses as much as digits as its factorization.

1814401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78910.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1814401 is about 1346.9970304347. The cubic root of 1814401 is about 121.9675852251.

Adding to 1814401 its reverse (1044181), we get a palindrome (2858582).

The spelling of 1814401 in words is "one million, eight hundred fourteen thousand, four hundred one".

Divisors: 1 23 78887 1814401