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13833397 = 61226777
BaseRepresentation
bin110100110001…
…010010110101
3222000210212001
4310301102311
512020132042
61212255301
7225403414
oct64612265
928023761
1013833397
117899266
124771531
132b34656
141ba147b
151333bb7
hexd314b5

13833397 has 4 divisors (see below), whose sum is σ = 14060236. Its totient is φ = 13606560.

The previous prime is 13833389. The next prime is 13833431. The reversal of 13833397 is 79333831.

13833397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79333831 = 233449297.

It can be written as a sum of positive squares in 2 ways, for example, as 224676 + 13608721 = 474^2 + 3689^2 .

It is a cyclic number.

It is not a de Polignac number, because 13833397 - 23 = 13833389 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 (13833307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113328 + ... + 113449.

It is an arithmetic number, because the mean of its divisors is an integer number (3515059).

Almost surely, 213833397 is an apocalyptic number.

It is an amenable number.

13833397 is a deficient number, since it is larger than the sum of its proper divisors (226839).

13833397 is an equidigital number, since it uses as much as digits as its factorization.

13833397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226838.

The product of its digits is 40824, while the sum is 37.

The square root of 13833397 is about 3719.3274929750. The cubic root of 13833397 is about 240.0543684697.

The spelling of 13833397 in words is "thirteen million, eight hundred thirty-three thousand, three hundred ninety-seven".

Divisors: 1 61 226777 13833397