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14074781 = 72387421
BaseRepresentation
bin110101101100…
…001110011101
3222111001222012
4311230032131
512100343111
61221401005
7230430230
oct65541635
928431865
1014074781
117a43656
124869165
132bba496
141c25417
15138048b
hexd6c39d

14074781 has 8 divisors (see below), whose sum is σ = 16785024. Its totient is φ = 11539440.

The previous prime is 14074777. The next prime is 14074783. The reversal of 14074781 is 18747041.

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

It is a cyclic number.

It is not a de Polignac number, because 14074781 - 22 = 14074777 is a prime.

It is a super-2 number, since 2×140747812 = 396198920395922, 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 (14074783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43550 + ... + 43871.

It is an arithmetic number, because the mean of its divisors is an integer number (2098128).

Almost surely, 214074781 is an apocalyptic number.

It is an amenable number.

14074781 is a deficient number, since it is larger than the sum of its proper divisors (2710243).

14074781 is an equidigital number, since it uses as much as digits as its factorization.

14074781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87451.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 14074781 is about 3751.6371093164. The cubic root of 14074781 is about 241.4425904484.

The spelling of 14074781 in words is "fourteen million, seventy-four thousand, seven hundred eighty-one".

Divisors: 1 7 23 161 87421 611947 2010683 14074781