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14722081 = 111338371
BaseRepresentation
bin111000001010…
…010000100001
31000200221220021
4320022100201
512232101311
61243313441
7236064343
oct70122041
930627807
1014722081
118345a10
124b1b881
133085cba
141d53293
15145c171
hexe0a421

14722081 has 4 divisors (see below), whose sum is σ = 16060464. Its totient is φ = 13383700.

The previous prime is 14722079. The next prime is 14722087. The reversal of 14722081 is 18022741.

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: 18022741 = 111638431.

It is not a de Polignac number, because 14722081 - 21 = 14722079 is a prime.

It is a super-2 number, since 2×147220812 = 433479337941122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14722087) 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, 669175 + ... + 669196.

It is an arithmetic number, because the mean of its divisors is an integer number (4015116).

Almost surely, 214722081 is an apocalyptic number.

14722081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14722081 is a deficient number, since it is larger than the sum of its proper divisors (1338383).

14722081 is a wasteful number, since it uses less digits than its factorization.

14722081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338382.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 14722081 is about 3836.9364081256. The cubic root of 14722081 is about 245.0885754978.

It can be divided in two parts, 1472 and 2081, that added together give a palindrome (3553).

The spelling of 14722081 in words is "fourteen million, seven hundred twenty-two thousand, eighty-one".

Divisors: 1 11 1338371 14722081