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13968493 = 711181409
BaseRepresentation
bin110101010010…
…010001101101
3222021200011121
4311102101231
512033442433
61215220541
7226505320
oct65222155
928250147
1013968493
117980810
124817751
132b80ca6
141bd87b7
15135dc2d
hexd5246d

13968493 has 8 divisors (see below), whose sum is σ = 17415360. Its totient is φ = 10884480.

The previous prime is 13968481. The next prime is 13968503. The reversal of 13968493 is 39486931.

13968493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-13968493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13968443) 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, 90628 + ... + 90781.

It is an arithmetic number, because the mean of its divisors is an integer number (2176920).

Almost surely, 213968493 is an apocalyptic number.

It is an amenable number.

13968493 is a deficient number, since it is larger than the sum of its proper divisors (3446867).

13968493 is a wasteful number, since it uses less digits than its factorization.

13968493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181427.

The product of its digits is 139968, while the sum is 43.

The square root of 13968493 is about 3737.4447153102. Note that the first 3 decimals coincide. The cubic root of 13968493 is about 240.8332897781.

It can be divided in two parts, 1396 and 8493, that added together give a palindrome (9889).

The spelling of 13968493 in words is "thirteen million, nine hundred sixty-eight thousand, four hundred ninety-three".

Divisors: 1 7 11 77 181409 1269863 1995499 13968493