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13650037 = 19718423
BaseRepresentation
bin110100000100…
…100001110101
3221200111022221
4310010201311
511443300122
61204322341
7224011012
oct64044165
927614287
1013650037
117783525
1246a33b1
132a9c05b
141b54709
1512e96c7
hexd04875

13650037 has 4 divisors (see below), whose sum is σ = 14368480. Its totient is φ = 12931596.

The previous prime is 13650029. The next prime is 13650047. The reversal of 13650037 is 73005631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73005631 = 151483481.

It is a cyclic number.

It is not a de Polignac number, because 13650037 - 23 = 13650029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13649993 and 13650020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13650047) 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, 359193 + ... + 359230.

It is an arithmetic number, because the mean of its divisors is an integer number (3592120).

Almost surely, 213650037 is an apocalyptic number.

It is an amenable number.

13650037 is a deficient number, since it is larger than the sum of its proper divisors (718443).

13650037 is an equidigital number, since it uses as much as digits as its factorization.

13650037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718442.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 13650037 is about 3694.5956476995. The cubic root of 13650037 is about 238.9890169611.

Adding to 13650037 its reverse (73005631), we get a palindrome (86655668).

The spelling of 13650037 in words is "thirteen million, six hundred fifty thousand, thirty-seven".

Divisors: 1 19 718423 13650037