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13729375 = 54111997
BaseRepresentation
bin110100010111…
…111001011111
3221211112011101
4310113321133
512003320000
61210133531
7224461222
oct64277137
927745141
1013729375
1178280a0
1247212a7
132ac91ba
141b755b9
151312e6a
hexd17e5f

13729375 has 20 divisors (see below), whose sum is σ = 18725256. Its totient is φ = 9980000.

The previous prime is 13729369. The next prime is 13729399. The reversal of 13729375 is 57392731.

It is a de Polignac number, because none of the positive numbers 2k-13729375 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5877 + ... + 7873.

Almost surely, 213729375 is an apocalyptic number.

13729375 is a deficient number, since it is larger than the sum of its proper divisors (4995881).

13729375 is an equidigital number, since it uses as much as digits as its factorization.

13729375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028 (or 2013 counting only the distinct ones).

The product of its digits is 39690, while the sum is 37.

The square root of 13729375 is about 3705.3171254293. The cubic root of 13729375 is about 239.4511474140.

The spelling of 13729375 in words is "thirteen million, seven hundred twenty-nine thousand, three hundred seventy-five".

Divisors: 1 5 11 25 55 125 275 625 1375 1997 6875 9985 21967 49925 109835 249625 549175 1248125 2745875 13729375