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13087452 = 2237347449
BaseRepresentation
bin110001111011…
…001011011100
3220121220121110
4301323023130
511322244302
61144302020
7216145560
oct61731334
926556543
1013087452
117429884
124471910
132932c71
141a496a0
151237b6c
hexc7b2dc

13087452 has 48 divisors (see below), whose sum is σ = 35078400. Its totient is φ = 3720192.

The previous prime is 13087441. The next prime is 13087457. The reversal of 13087452 is 25478031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13087457) 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, 28924 + ... + 29372.

It is an arithmetic number, because the mean of its divisors is an integer number (730800).

Almost surely, 213087452 is an apocalyptic number.

13087452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13087452 is an abundant number, since it is smaller than the sum of its proper divisors (21990948).

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

13087452 is a wasteful number, since it uses less digits than its factorization.

13087452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 13087452 is about 3617.6583586624. The cubic root of 13087452 is about 235.6595445228.

The spelling of 13087452 in words is "thirteen million, eighty-seven thousand, four hundred fifty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 347 449 694 898 1041 1347 1388 1796 2082 2429 2694 3143 4164 4858 5388 6286 7287 9429 9716 12572 14574 18858 29148 37716 155803 311606 467409 623212 934818 1090621 1869636 2181242 3271863 4362484 6543726 13087452