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13950047 = 171943189
BaseRepresentation
bin110101001101…
…110001011111
3222020201212102
4311031301133
512032400142
61214555315
7226400456
oct65156137
928221772
1013950047
117968971
124808b3b
132b75787
141bd1b9d
151358532
hexd4dc5f

13950047 has 8 divisors (see below), whose sum is σ = 15548400. Its totient is φ = 12438144.

The previous prime is 13950043. The next prime is 13950049. The reversal of 13950047 is 74005931.

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 13950047 - 22 = 13950043 is a prime.

It is a super-2 number, since 2×139500472 = 389207622604418, 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 (13950043) 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, 21272 + ... + 21917.

It is an arithmetic number, because the mean of its divisors is an integer number (1943550).

Almost surely, 213950047 is an apocalyptic number.

13950047 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13950047 is a deficient number, since it is larger than the sum of its proper divisors (1598353).

13950047 is a wasteful number, since it uses less digits than its factorization.

13950047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43225.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 13950047 is about 3734.9761712761. The cubic root of 13950047 is about 240.7272328168.

Adding to 13950047 its reverse (74005931), we get a palindrome (87955978).

The spelling of 13950047 in words is "thirteen million, nine hundred fifty thousand, forty-seven".

Divisors: 1 17 19 323 43189 734213 820591 13950047