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13230542 = 213508867
BaseRepresentation
bin110010011110…
…000111001110
3220220011220002
4302132013032
511341334132
61151324302
7220313003
oct62360716
926804802
1013230542
117517336
124520692
132983130
141a858aa
151265262
hexc9e1ce

13230542 has 8 divisors (see below), whose sum is σ = 21372456. Its totient is φ = 6106392.

The previous prime is 13230527. The next prime is 13230551. The reversal of 13230542 is 24503231.

It is a happy number.

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

It is a super-2 number, since 2×132305422 = 350094483227528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 254408 + ... + 254459.

It is an arithmetic number, because the mean of its divisors is an integer number (2671557).

Almost surely, 213230542 is an apocalyptic number.

13230542 is a deficient number, since it is larger than the sum of its proper divisors (8141914).

13230542 is a wasteful number, since it uses less digits than its factorization.

13230542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508882.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 13230542 is about 3637.3812008092. The cubic root of 13230542 is about 236.5152846181.

Adding to 13230542 its reverse (24503231), we get a palindrome (37733773).

The spelling of 13230542 in words is "thirteen million, two hundred thirty thousand, five hundred forty-two".

Divisors: 1 2 13 26 508867 1017734 6615271 13230542