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13955837 = 72284813
BaseRepresentation
bin110101001111…
…001011111101
3222021000210212
4311033023331
512033041322
61215042205
7226423400
oct65171375
928230725
1013955837
117972255
124810365
132b782bc
141bd3d37
15135a0e2
hexd4f2fd

13955837 has 6 divisors (see below), whose sum is σ = 16234398. Its totient is φ = 11962104.

The previous prime is 13955813. The next prime is 13955857. The reversal of 13955837 is 73855931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8357881 + 5597956 = 2891^2 + 2366^2 .

It is not a de Polignac number, because 13955837 - 28 = 13955581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13955794 and 13955803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13955807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142358 + ... + 142455.

It is an arithmetic number, because the mean of its divisors is an integer number (2705733).

Almost surely, 213955837 is an apocalyptic number.

It is an amenable number.

13955837 is a deficient number, since it is larger than the sum of its proper divisors (2278561).

13955837 is an equidigital number, since it uses as much as digits as its factorization.

13955837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284827 (or 284820 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 13955837 is about 3735.7511962121. The cubic root of 13955837 is about 240.7605330125.

The spelling of 13955837 in words is "thirteen million, nine hundred fifty-five thousand, eight hundred thirty-seven".

Divisors: 1 7 49 284813 1993691 13955837