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14971381 = 17983639
BaseRepresentation
bin111001000111…
…000111110101
31001011121212121
4321013013311
512313041011
61252515541
7241153225
oct71070765
931147777
1014971381
1184a6247
12501bbb1
133142609
141dba085
1514aae71
hexe471f5

14971381 has 4 divisors (see below), whose sum is σ = 15055200. Its totient is φ = 14887564.

The previous prime is 14971379. The next prime is 14971391. The reversal of 14971381 is 18317941.

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.

It is a cyclic number.

It is not a de Polignac number, because 14971381 - 21 = 14971379 is a prime.

It is a super-2 number, since 2×149713812 = 448284498094322, 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 (14971301) 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, 41641 + ... + 41998.

It is an arithmetic number, because the mean of its divisors is an integer number (3763800).

Almost surely, 214971381 is an apocalyptic number.

It is an amenable number.

14971381 is a deficient number, since it is larger than the sum of its proper divisors (83819).

14971381 is an equidigital number, since it uses as much as digits as its factorization.

14971381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83818.

The product of its digits is 6048, while the sum is 34.

The square root of 14971381 is about 3869.2868852025. The cubic root of 14971381 is about 246.4642619694.

The spelling of 14971381 in words is "fourteen million, nine hundred seventy-one thousand, three hundred eighty-one".

Divisors: 1 179 83639 14971381