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13147442 = 2711591447
BaseRepresentation
bin110010001001…
…110100110010
3220201221220022
4302021310302
511331204232
61145443442
7216515510
oct62116462
926657808
1013147442
11746a960
1244a0582
132954369
141a634b0
15124a812
hexc89d32

13147442 has 32 divisors (see below), whose sum is σ = 25021440. Its totient is φ = 5032080.

The previous prime is 13147427. The next prime is 13147447. The reversal of 13147442 is 24474131.

It is a super-2 number, since 2×131474422 = 345710462286728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13147447) 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 15 ways as a sum of consecutive naturals, for example, 8363 + ... + 9809.

It is an arithmetic number, because the mean of its divisors is an integer number (781920).

Almost surely, 213147442 is an apocalyptic number.

13147442 is a deficient number, since it is larger than the sum of its proper divisors (11873998).

13147442 is a wasteful number, since it uses less digits than its factorization.

13147442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526.

The product of its digits is 2688, while the sum is 26.

The square root of 13147442 is about 3625.9401539463. The cubic root of 13147442 is about 236.0190662562.

The spelling of 13147442 in words is "thirteen million, one hundred forty-seven thousand, four hundred forty-two".

Divisors: 1 2 7 11 14 22 59 77 118 154 413 649 826 1298 1447 2894 4543 9086 10129 15917 20258 31834 85373 111419 170746 222838 597611 939103 1195222 1878206 6573721 13147442