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14941981 = 79189139
BaseRepresentation
bin111000111111…
…111100011101
31001010010112201
4320333330131
512311120411
61252131501
7241001425
oct70777435
931103481
1014941981
11848614a
125006b91
133132112
141dad485
1514a23c1
hexe3ff1d

14941981 has 4 divisors (see below), whose sum is σ = 15131200. Its totient is φ = 14752764.

The previous prime is 14941957. The next prime is 14942003. The reversal of 14941981 is 18914941.

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: 18914941 = 61310081.

It is a cyclic number.

It is not a de Polignac number, because 14941981 - 27 = 14941853 is a prime.

It is a super-2 number, since 2×149419812 = 446525592408722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14941981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14941921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94491 + ... + 94648.

It is an arithmetic number, because the mean of its divisors is an integer number (3782800).

Almost surely, 214941981 is an apocalyptic number.

It is an amenable number.

14941981 is a deficient number, since it is larger than the sum of its proper divisors (189219).

14941981 is an equidigital number, since it uses as much as digits as its factorization.

14941981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189218.

The product of its digits is 10368, while the sum is 37.

The square root of 14941981 is about 3865.4858685552. The cubic root of 14941981 is about 246.3028251227.

The spelling of 14941981 in words is "fourteen million, nine hundred forty-one thousand, nine hundred eighty-one".

Divisors: 1 79 189139 14941981