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14415021 = 321818849
BaseRepresentation
bin110110111111…
…010010101101
31000010100200200
4312333102231
512142240041
61232544113
7233345205
oct66772255
930110620
1014415021
118156245
1249b2039
132ca92ca
141cb3405
1513eb1b6
hexdbf4ad

14415021 has 12 divisors (see below), whose sum is σ = 20939100. Its totient is φ = 9555840.

The previous prime is 14415007. The next prime is 14415029. The reversal of 14415021 is 12051441.

It can be written as a sum of positive squares in 2 ways, for example, as 81225 + 14333796 = 285^2 + 3786^2 .

It is not a de Polignac number, because 14415021 - 25 = 14414989 is a prime.

It is a zygodrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 14414985 and 14415003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14415029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2796 + ... + 6053.

It is an arithmetic number, because the mean of its divisors is an integer number (1744925).

Almost surely, 214415021 is an apocalyptic number.

It is an amenable number.

14415021 is a deficient number, since it is larger than the sum of its proper divisors (6524079).

14415021 is a wasteful number, since it uses less digits than its factorization.

14415021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9036 (or 9033 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 14415021 is about 3796.7118668659. The cubic root of 14415021 is about 243.3726437189.

Adding to 14415021 its reverse (12051441), we get a palindrome (26466462).

The spelling of 14415021 in words is "fourteen million, four hundred fifteen thousand, twenty-one".

Divisors: 1 3 9 181 543 1629 8849 26547 79641 1601669 4805007 14415021