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13252945 = 517236779
BaseRepresentation
bin110010100011…
…100101010001
3220221022121211
4302203211101
511343043240
61152020121
7220435216
oct62434521
926838554
1013252945
117532152
124531641
1329903a4
141a8db0d
15126bbea
hexca3951

13252945 has 16 divisors (see below), whose sum is σ = 17573760. Its totient is φ = 9543424.

The previous prime is 13252933. The next prime is 13252973. The reversal of 13252945 is 54925231.

It is a cyclic number.

It is not a de Polignac number, because 13252945 - 215 = 13220177 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1435 + ... + 5344.

It is an arithmetic number, because the mean of its divisors is an integer number (1098360).

Almost surely, 213252945 is an apocalyptic number.

It is an amenable number.

13252945 is a deficient number, since it is larger than the sum of its proper divisors (4320815).

13252945 is a wasteful number, since it uses less digits than its factorization.

13252945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6824.

The product of its digits is 10800, while the sum is 31.

The square root of 13252945 is about 3640.4594490256. The cubic root of 13252945 is about 236.6487048018.

The spelling of 13252945 in words is "thirteen million, two hundred fifty-two thousand, nine hundred forty-five".

Divisors: 1 5 17 23 85 115 391 1955 6779 33895 115243 155917 576215 779585 2650589 13252945