Search a number
-
+
16327481 = 25316451
BaseRepresentation
bin111110010010…
…001100111001
31010201112002112
4332102030321
513134434411
61341542105
7255531662
oct76221471
933645075
1016327481
119242095
125574935
1334c8941
142250369
151677b8b
hexf92339

16327481 has 4 divisors (see below), whose sum is σ = 16336464. Its totient is φ = 16318500.

The previous prime is 16327477. The next prime is 16327489. The reversal of 16327481 is 18472361.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18472361 = 37499253.

It is a cyclic number.

It is not a de Polignac number, because 16327481 - 22 = 16327477 is a prime.

It is a super-2 number, since 2×163274812 = 533173271610722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16327489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695 + ... + 5756.

It is an arithmetic number, because the mean of its divisors is an integer number (4084116).

Almost surely, 216327481 is an apocalyptic number.

It is an amenable number.

16327481 is a deficient number, since it is larger than the sum of its proper divisors (8983).

16327481 is an equidigital number, since it uses as much as digits as its factorization.

16327481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8982.

The product of its digits is 8064, while the sum is 32.

The square root of 16327481 is about 4040.7277809820. The cubic root of 16327481 is about 253.6917800216.

The spelling of 16327481 in words is "sixteen million, three hundred twenty-seven thousand, four hundred eighty-one".

Divisors: 1 2531 6451 16327481