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16538241 = 310751521
BaseRepresentation
bin111111000101…
…101010000001
31011010020012110
4333011222001
513213210431
61350245533
7260400306
oct77055201
934106173
1016538241
119376475
1256568a9
133570855
1516ba346
hexfc5a81

16538241 has 8 divisors (see below), whose sum is σ = 22257504. Its totient is φ = 10922240.

The previous prime is 16538239. The next prime is 16538251. The reversal of 16538241 is 14283561.

16538241 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16538241 - 21 = 16538239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16538199 and 16538208.

It is not an unprimeable number, because it can be changed into a prime (16538201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25440 + ... + 26081.

It is an arithmetic number, because the mean of its divisors is an integer number (2782188).

It is the magic constant of a 321 × 321 magic square.

Almost surely, 216538241 is an apocalyptic number.

It is an amenable number.

16538241 is a deficient number, since it is larger than the sum of its proper divisors (5719263).

16538241 is a wasteful number, since it uses less digits than its factorization.

16538241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51631.

The product of its digits is 5760, while the sum is 30.

The square root of 16538241 is about 4066.7236198198. The cubic root of 16538241 is about 254.7786930340.

The spelling of 16538241 in words is "sixteen million, five hundred thirty-eight thousand, two hundred forty-one".

Divisors: 1 3 107 321 51521 154563 5512747 16538241