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BaseRepresentation
bin111101001000…
…000111001001
31010011002210211
4331020013021
513100232014
61331241121
7253126141
oct75100711
933132724
1016024009
119055091
1254491a1
133420781
1421b1921
151617cc4
hexf481c9

16024009 has 3 divisors (see below), whose sum is σ = 16028013. Its totient is φ = 16020006.

The previous prime is 16024007. The next prime is 16024027. The reversal of 16024009 is 90042061.

The square root of 16024009 is 4003.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90042061 = 99790313.

It is not a de Polignac number, because 16024009 - 21 = 16024007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16024003) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 2002 + ... + 6004.

It is an arithmetic number, because the mean of its divisors is an integer number (5342671).

Almost surely, 216024009 is an apocalyptic number.

16024009 is the 4003-rd square number.

16024009 is the 2002-nd centered octagonal number.

It is an amenable number.

16024009 is a deficient number, since it is larger than the sum of its proper divisors (4004).

16024009 is an frugal number, since it uses more digits than its factorization.

16024009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8006 (or 4003 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The cubic root of 16024009 is about 252.1101863402.

The spelling of 16024009 in words is "sixteen million, twenty-four thousand, nine".

Divisors: 1 4003 16024009