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13442505 = 35896167
BaseRepresentation
bin110011010001…
…110111001001
3221021221122120
4303101313021
511420130010
61200041453
7222154656
oct63216711
927257576
1013442505
11765160a
124603289
132a2875b
141adcc2d
1512a7e70
hexcd1dc9

13442505 has 8 divisors (see below), whose sum is σ = 21508032. Its totient is φ = 7169328.

The previous prime is 13442483. The next prime is 13442537. The reversal of 13442505 is 50524431.

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

It is not a de Polignac number, because 13442505 - 26 = 13442441 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 448069 + ... + 448098.

It is an arithmetic number, because the mean of its divisors is an integer number (2688504).

Almost surely, 213442505 is an apocalyptic number.

13442505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13442505 is a deficient number, since it is larger than the sum of its proper divisors (8065527).

13442505 is an equidigital number, since it uses as much as digits as its factorization.

13442505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896175.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 13442505 is about 3666.4021874312. The cubic root of 13442505 is about 237.7716485466.

Adding to 13442505 its reverse (50524431), we get a palindrome (63966936).

The spelling of 13442505 in words is "thirteen million, four hundred forty-two thousand, five hundred five".

Divisors: 1 3 5 15 896167 2688501 4480835 13442505