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14930881 = 72132983
BaseRepresentation
bin111000111101…
…001111000001
31001002120022121
4320331033001
512310242011
61252004241
7240624160
oct70751701
931076277
1014930881
118478879
125000681
13312a054
141da93d7
15149de71
hexe3d3c1

14930881 has 4 divisors (see below), whose sum is σ = 17063872. Its totient is φ = 12797892.

The previous prime is 14930863. The next prime is 14930891. The reversal of 14930881 is 18803941.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18803941 = 131446457.

It is a cyclic number.

It is not a de Polignac number, because 14930881 - 25 = 14930849 is a prime.

It is a super-2 number, since 2×149308812 = 445862414872322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14930801) 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, 1066485 + ... + 1066498.

It is an arithmetic number, because the mean of its divisors is an integer number (4265968).

Almost surely, 214930881 is an apocalyptic number.

It is an amenable number.

14930881 is a deficient number, since it is larger than the sum of its proper divisors (2132991).

14930881 is an equidigital number, since it uses as much as digits as its factorization.

14930881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132990.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 14930881 is about 3864.0498185194. The cubic root of 14930881 is about 246.2418194092.

The spelling of 14930881 in words is "fourteen million, nine hundred thirty thousand, eight hundred eighty-one".

Divisors: 1 7 2132983 14930881