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14457931 = 21168521
BaseRepresentation
bin110111001001…
…110001001011
31000012112112221
4313021301023
512200123211
61233514511
7233614255
oct67116113
930175487
1014457931
118185504
124a12a37
132cc29b7
141cc4cd5
151408c71
hexdc9c4b

14457931 has 4 divisors (see below), whose sum is σ = 14526664. Its totient is φ = 14389200.

The previous prime is 14457929. The next prime is 14457941. The reversal of 14457931 is 13975441.

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 14457931 - 21 = 14457929 is a prime.

It is a super-2 number, since 2×144579312 = 418063537601522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14457901) 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 3 ways as a sum of consecutive naturals, for example, 34050 + ... + 34471.

It is an arithmetic number, because the mean of its divisors is an integer number (3631666).

Almost surely, 214457931 is an apocalyptic number.

14457931 is a deficient number, since it is larger than the sum of its proper divisors (68733).

14457931 is an equidigital number, since it uses as much as digits as its factorization.

14457931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68732.

The product of its digits is 15120, while the sum is 34.

The square root of 14457931 is about 3802.3586101261. The cubic root of 14457931 is about 243.6138914895.

The spelling of 14457931 in words is "fourteen million, four hundred fifty-seven thousand, nine hundred thirty-one".

Divisors: 1 211 68521 14457931