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13198810 = 2510912109
BaseRepresentation
bin110010010110…
…010111011010
3220211120100211
4302112113122
511334330220
61150521334
7220121332
oct62262732
926746324
1013198810
1174a5509
12450624a
132971861
141a780c2
15125ab5a
hexc965da

13198810 has 16 divisors (see below), whose sum is σ = 23977800. Its totient is φ = 5230656.

The previous prime is 13198793. The next prime is 13198811. The reversal of 13198810 is 1889131.

It can be written as a sum of positive squares in 4 ways, for example, as 13198689 + 121 = 3633^2 + 11^2 .

It is a super-2 number, since 2×131988102 = 348417170832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13198811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4965 + ... + 7144.

Almost surely, 213198810 is an apocalyptic number.

13198810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13198810 is a deficient number, since it is larger than the sum of its proper divisors (10778990).

13198810 is a wasteful number, since it uses less digits than its factorization.

13198810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12225.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 13198810 is about 3633.0166528658. The cubic root of 13198810 is about 236.3260479496.

The spelling of 13198810 in words is "thirteen million, one hundred ninety-eight thousand, eight hundred ten".

Divisors: 1 2 5 10 109 218 545 1090 12109 24218 60545 121090 1319881 2639762 6599405 13198810