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13253442 = 237330259
BaseRepresentation
bin110010100011…
…101101000010
3220221100022020
4302203231002
511343102232
61152022310
7220436526
oct62435502
926840266
1013253442
117532564
124531996
132990697
141a8dd86
15126be2c
hexca3b42

13253442 has 16 divisors (see below), whose sum is σ = 26870880. Its totient is φ = 4357152.

The previous prime is 13253441. The next prime is 13253447. The reversal of 13253442 is 24435231.

It is not an unprimeable number, because it can be changed into a prime (13253441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14692 + ... + 15567.

It is an arithmetic number, because the mean of its divisors is an integer number (1679430).

Almost surely, 213253442 is an apocalyptic number.

13253442 is an abundant number, since it is smaller than the sum of its proper divisors (13617438).

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

13253442 is a wasteful number, since it uses less digits than its factorization.

13253442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30337.

The product of its digits is 2880, while the sum is 24.

The square root of 13253442 is about 3640.5277090004. The cubic root of 13253442 is about 236.6516629603.

Adding to 13253442 its reverse (24435231), we get a palindrome (37688673).

It can be divided in two parts, 13253 and 442, that added together give a triangular number (13695 = T165).

The spelling of 13253442 in words is "thirteen million, two hundred fifty-three thousand, four hundred forty-two".

Divisors: 1 2 3 6 73 146 219 438 30259 60518 90777 181554 2208907 4417814 6626721 13253442