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13252215 = 351946499
BaseRepresentation
bin110010100011…
…011001110111
3220221021121210
4302203121313
511343032330
61152012503
7220433124
oct62433167
926837553
1013252215
117531649
124531133
13298cc62
141a8d74b
15126b8b0
hexca3677

13252215 has 16 divisors (see below), whose sum is σ = 22320000. Its totient is φ = 6695712.

The previous prime is 13252199. The next prime is 13252219. The reversal of 13252215 is 51225231.

It is not a de Polignac number, because 13252215 - 24 = 13252199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13252191 and 13252200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13252219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22965 + ... + 23534.

It is an arithmetic number, because the mean of its divisors is an integer number (1395000).

Almost surely, 213252215 is an apocalyptic number.

13252215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13252215 is a deficient number, since it is larger than the sum of its proper divisors (9067785).

13252215 is a wasteful number, since it uses less digits than its factorization.

13252215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46526.

The product of its digits is 600, while the sum is 21.

The square root of 13252215 is about 3640.3591855750. The cubic root of 13252215 is about 236.6443596864.

Adding to 13252215 its reverse (51225231), we get a palindrome (64477446).

The spelling of 13252215 in words is "thirteen million, two hundred fifty-two thousand, two hundred fifteen".

Divisors: 1 3 5 15 19 57 95 285 46499 139497 232495 697485 883481 2650443 4417405 13252215