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14407531 = 17980489
BaseRepresentation
bin110110111101…
…011101101011
31000002222102021
4312331131223
512142020111
61232445311
7233314315
oct66753553
930088367
1014407531
118150656
1249a9837
132ca5a88
141cb07b5
1513e8d71
hexdbd76b

14407531 has 4 divisors (see below), whose sum is σ = 14488200. Its totient is φ = 14326864.

The previous prime is 14407501. The next prime is 14407553. The reversal of 14407531 is 13570441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 14407531 - 213 = 14399339 is a prime.

It is a super-2 number, since 2×144075312 = 415153899031922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14407496 and 14407505.

It is not an unprimeable number, because it can be changed into a prime (14407501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40066 + ... + 40423.

It is an arithmetic number, because the mean of its divisors is an integer number (3622050).

Almost surely, 214407531 is an apocalyptic number.

14407531 is the 1698-th centered decagonal number.

14407531 is a deficient number, since it is larger than the sum of its proper divisors (80669).

14407531 is an equidigital number, since it uses as much as digits as its factorization.

14407531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80668.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 14407531 is about 3795.7253588741. The cubic root of 14407531 is about 243.3304845270.

Adding to 14407531 its reverse (13570441), we get a palindrome (27977972).

The spelling of 14407531 in words is "fourteen million, four hundred seven thousand, five hundred thirty-one".

Divisors: 1 179 80489 14407531