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13281464 = 2374872
BaseRepresentation
bin110010101010…
…100010111000
3220222202202002
4302222202320
511400001324
61152400132
7220614320
oct62524270
926882662
1013281464
117551619
124546048
1329a0371
141a9a280
1512753ae
hexcaa8b8

13281464 has 24 divisors (see below), whose sum is σ = 28518840. Its totient is φ = 5680368.

The previous prime is 13281461. The next prime is 13281493. The reversal of 13281464 is 46418231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13281461) 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 5 ways as a sum of consecutive naturals, for example, 27029 + ... + 27515.

It is an arithmetic number, because the mean of its divisors is an integer number (1188285).

Almost surely, 213281464 is an apocalyptic number.

13281464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13281464 is an abundant number, since it is smaller than the sum of its proper divisors (15237376).

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

13281464 is an frugal number, since it uses more digits than its factorization.

13281464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 496 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 13281464 is about 3644.3742947178. The cubic root of 13281464 is about 236.8183312294.

Adding to 13281464 its reverse (46418231), we get a palindrome (59699695).

The spelling of 13281464 in words is "thirteen million, two hundred eighty-one thousand, four hundred sixty-four".

Divisors: 1 2 4 7 8 14 28 56 487 974 1948 3409 3896 6818 13636 27272 237169 474338 948676 1660183 1897352 3320366 6640732 13281464