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16318423 = 112157859
BaseRepresentation
bin111110001111…
…111111010111
31010201001200001
4332033333113
513134142143
61341432131
7255463402
oct76177727
933631601
1016318423
119236300
12556b647
1334c4794
14224ad39
15167514d
hexf8ffd7

16318423 has 12 divisors (see below), whose sum is σ = 18072040. Its totient is φ = 14723280.

The previous prime is 16318411. The next prime is 16318459. The reversal of 16318423 is 32481361.

It is not a de Polignac number, because 16318423 - 25 = 16318391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16318391 and 16318400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16318403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18568 + ... + 19426.

Almost surely, 216318423 is an apocalyptic number.

16318423 is a deficient number, since it is larger than the sum of its proper divisors (1753617).

16318423 is a wasteful number, since it uses less digits than its factorization.

16318423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1027 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 16318423 is about 4039.6067877951. The cubic root of 16318423 is about 253.6448577965.

Adding to 16318423 its reverse (32481361), we get a palindrome (48799784).

The spelling of 16318423 in words is "sixteen million, three hundred eighteen thousand, four hundred twenty-three".

Divisors: 1 11 121 157 859 1727 9449 18997 103939 134863 1483493 16318423