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13020403215 = 35868026881
BaseRepresentation
bin11000010000001001…
…11001011000001111
31020121102012000102010
430020010321120033
5203131210400330
65552000232303
7640441413141
oct141004713017
936542160363
1013020403215
115581750716
12263460b693
1312c6696801
148b735ac91
155131323b0
hex30813960f

13020403215 has 8 divisors (see below), whose sum is σ = 20832645168. Its totient is φ = 6944215040.

The previous prime is 13020403199. The next prime is 13020403223. The reversal of 13020403215 is 51230402031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13020403215 - 24 = 13020403199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13020403191 and 13020403200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434013426 + ... + 434013455.

It is an arithmetic number, because the mean of its divisors is an integer number (2604080646).

Almost surely, 213020403215 is an apocalyptic number.

13020403215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13020403215 is a deficient number, since it is larger than the sum of its proper divisors (7812241953).

13020403215 is an equidigital number, since it uses as much as digits as its factorization.

13020403215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868026889.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 13020403215 its reverse (51230402031), we get a palindrome (64250805246).

The spelling of 13020403215 in words is "thirteen billion, twenty million, four hundred three thousand, two hundred fifteen".

Divisors: 1 3 5 15 868026881 2604080643 4340134405 13020403215