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14228783 = 31458993
BaseRepresentation
bin110110010001…
…110100101111
3222202220012222
4312101310233
512120310113
61224545555
7231641222
oct66216457
928686188
1014228783
118039328
1249222bb
132c425ca
141c655b9
1513b0e08
hexd91d2f

14228783 has 4 divisors (see below), whose sum is σ = 14687808. Its totient is φ = 13769760.

The previous prime is 14228761. The next prime is 14228801. The reversal of 14228783 is 38782241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38782241 = 109735353.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14228783 is a prime.

It is a super-2 number, since 2×142287832 = 404916531322178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14228713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229466 + ... + 229527.

It is an arithmetic number, because the mean of its divisors is an integer number (3671952).

Almost surely, 214228783 is an apocalyptic number.

14228783 is a deficient number, since it is larger than the sum of its proper divisors (459025).

14228783 is an equidigital number, since it uses as much as digits as its factorization.

14228783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459024.

The product of its digits is 21504, while the sum is 35.

The square root of 14228783 is about 3772.1059104962. The cubic root of 14228783 is about 242.3199953725.

The spelling of 14228783 in words is "fourteen million, two hundred twenty-eight thousand, seven hundred eighty-three".

Divisors: 1 31 458993 14228783