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13129492 = 2231105883
BaseRepresentation
bin110010000101…
…011100010100
3220201001021111
4302011130110
511330120432
61145224404
7216412255
oct62053424
926631244
1013129492
117458422
124492104
13294913c
141a5ab2c
151245347
hexc85714

13129492 has 12 divisors (see below), whose sum is σ = 23718016. Its totient is φ = 6352920.

The previous prime is 13129483. The next prime is 13129499. The reversal of 13129492 is 29492131.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52818 + ... + 53065.

Almost surely, 213129492 is an apocalyptic number.

It is an amenable number.

13129492 is a deficient number, since it is larger than the sum of its proper divisors (10588524).

13129492 is a wasteful number, since it uses less digits than its factorization.

13129492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105918 (or 105916 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 13129492 is about 3623.4640884104. The cubic root of 13129492 is about 235.9116062719.

The spelling of 13129492 in words is "thirteen million, one hundred twenty-nine thousand, four hundred ninety-two".

Divisors: 1 2 4 31 62 124 105883 211766 423532 3282373 6564746 13129492