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13869331 = 717116549
BaseRepresentation
bin110100111010…
…000100010011
3222002122010221
4310322010103
512022304311
61213133511
7225613240
oct64720423
928078127
1013869331
117913263
12478a297
132b47b08
141bb05c7
15133e671
hexd3a113

13869331 has 8 divisors (see below), whose sum is σ = 16783200. Its totient is φ = 11188608.

The previous prime is 13869313. The next prime is 13869347. The reversal of 13869331 is 13396831.

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

It is a cyclic number.

It is not a de Polignac number, because 13869331 - 27 = 13869203 is a prime.

It is a super-2 number, since 2×138693312 = 384716684775122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13869131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58156 + ... + 58393.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 213869331 is an apocalyptic number.

13869331 is a deficient number, since it is larger than the sum of its proper divisors (2913869).

13869331 is a wasteful number, since it uses less digits than its factorization.

13869331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116573.

The product of its digits is 11664, while the sum is 34.

The square root of 13869331 is about 3724.1550719593. The cubic root of 13869331 is about 240.2620459548.

The spelling of 13869331 in words is "thirteen million, eight hundred sixty-nine thousand, three hundred thirty-one".

Divisors: 1 7 17 119 116549 815843 1981333 13869331