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14981947 = 172338317
BaseRepresentation
bin111001001001…
…101100111011
31001012011100221
4321021230323
512313410242
61253040511
7241226101
oct71115473
931164327
1014981947
118503182
125026137
133147376
141dbdc71
1514ae167
hexe49b3b

14981947 has 8 divisors (see below), whose sum is σ = 16553376. Its totient is φ = 13487232.

The previous prime is 14981927. The next prime is 14981957. The reversal of 14981947 is 74918941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14981947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14981917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18768 + ... + 19549.

It is an arithmetic number, because the mean of its divisors is an integer number (2069172).

Almost surely, 214981947 is an apocalyptic number.

14981947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

14981947 is a deficient number, since it is larger than the sum of its proper divisors (1571429).

14981947 is a wasteful number, since it uses less digits than its factorization.

14981947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38357.

The product of its digits is 72576, while the sum is 43.

The square root of 14981947 is about 3870.6520122584. The cubic root of 14981947 is about 246.5222287664.

The spelling of 14981947 in words is "fourteen million, nine hundred eighty-one thousand, nine hundred forty-seven".

Divisors: 1 17 23 391 38317 651389 881291 14981947