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13445355 = 3572111663
BaseRepresentation
bin110011010010…
…100011101011
3221022002120010
4303102203223
511420222410
61200103003
7222166200
oct63224353
927262503
1013445355
117653770
124604a63
132a29b41
141addca7
1512a8c20
hexcd28eb

13445355 has 48 divisors (see below), whose sum is σ = 27316224. Its totient is φ = 5584320.

The previous prime is 13445353. The next prime is 13445371. The reversal of 13445355 is 55354431.

It is not a de Polignac number, because 13445355 - 21 = 13445353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13445353) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 7254 + ... + 8916.

It is an arithmetic number, because the mean of its divisors is an integer number (569088).

Almost surely, 213445355 is an apocalyptic number.

13445355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13445355 is an abundant number, since it is smaller than the sum of its proper divisors (13870869).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13445355 is a wasteful number, since it uses less digits than its factorization.

13445355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696 (or 1689 counting only the distinct ones).

The product of its digits is 18000, while the sum is 30.

The square root of 13445355 is about 3666.7908312310. The cubic root of 13445355 is about 237.7884510030.

Adding to 13445355 its reverse (55354431), we get a palindrome (68799786).

The spelling of 13445355 in words is "thirteen million, four hundred forty-five thousand, three hundred fifty-five".

Divisors: 1 3 5 7 11 15 21 33 35 49 55 77 105 147 165 231 245 385 539 735 1155 1617 1663 2695 4989 8085 8315 11641 18293 24945 34923 54879 58205 81487 91465 128051 174615 244461 274395 384153 407435 640255 896357 1222305 1920765 2689071 4481785 13445355