Search a number
-
+
13140415 = 52628083
BaseRepresentation
bin110010001000…
…000110111111
3220201121021001
4302020012333
511330443130
61145351131
7216456151
oct62100677
926647231
1013140415
117465652
1244984a7
1329510c2
141a60ad1
1512486ca
hexc881bf

13140415 has 4 divisors (see below), whose sum is σ = 15768504. Its totient is φ = 10512328.

The previous prime is 13140409. The next prime is 13140427. The reversal of 13140415 is 51404131.

13140415 is digitally balanced in base 2 and base 3, because in such bases 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: 51404131 = 60185531.

It is a cyclic number.

It is not a de Polignac number, because 13140415 - 217 = 13009343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13140392 and 13140401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314037 + ... + 1314046.

It is an arithmetic number, because the mean of its divisors is an integer number (3942126).

Almost surely, 213140415 is an apocalyptic number.

13140415 is a deficient number, since it is larger than the sum of its proper divisors (2628089).

13140415 is an equidigital number, since it uses as much as digits as its factorization.

13140415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628088.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 13140415 is about 3624.9710343670. The cubic root of 13140415 is about 235.9770098738.

Adding to 13140415 its reverse (51404131), we get a palindrome (64544546).

The spelling of 13140415 in words is "thirteen million, one hundred forty thousand, four hundred fifteen".

Divisors: 1 5 2628083 13140415