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13225992 = 2331342391
BaseRepresentation
bin110010011101…
…000000001000
3220212221122120
4302131000020
511341212432
61151251240
7220263513
oct62350010
926787576
1013225992
11751397a
124519b20
132981040
141a83d7a
151263c2c
hexc9d008

13225992 has 32 divisors (see below), whose sum is σ = 35609280. Its totient is φ = 4069440.

The previous prime is 13225987. The next prime is 13225997. The reversal of 13225992 is 29952231.

It is an interprime number because it is at equal distance from previous prime (13225987) and next prime (13225997).

It is not an unprimeable number, because it can be changed into a prime (13225997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20884 + ... + 21507.

It is an arithmetic number, because the mean of its divisors is an integer number (1112790).

Almost surely, 213225992 is an apocalyptic number.

13225992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13225992 is an abundant number, since it is smaller than the sum of its proper divisors (22383288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13225992 is a wasteful number, since it uses less digits than its factorization.

13225992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42413 (or 42409 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 13225992 is about 3636.7556970465. The cubic root of 13225992 is about 236.4881688751.

The spelling of 13225992 in words is "thirteen million, two hundred twenty-five thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 42391 84782 127173 169564 254346 339128 508692 551083 1017384 1102166 1653249 2204332 3306498 4408664 6612996 13225992