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13330458 = 232740581
BaseRepresentation
bin110010110110…
…100000011010
3221002020221200
4302312200122
511403033313
61153415030
7221210211
oct62664032
927066850
1013330458
117585409
12456a476
1329b975b
141ab0078
151284b73
hexcb681a

13330458 has 12 divisors (see below), whose sum is σ = 28882698. Its totient is φ = 4443480.

The previous prime is 13330451. The next prime is 13330477. The reversal of 13330458 is 85403331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13198689 + 131769 = 3633^2 + 363^2 .

It is a super-2 number, since 2×133304582 = 355402220979528, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13330451) 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, 370273 + ... + 370308.

Almost surely, 213330458 is an apocalyptic number.

13330458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13330458 is an abundant number, since it is smaller than the sum of its proper divisors (15552240).

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

13330458 is a wasteful number, since it uses less digits than its factorization.

13330458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740589 (or 740586 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 13330458 is about 3651.0899742406. The cubic root of 13330458 is about 237.1091736508.

Adding to 13330458 its reverse (85403331), we get a palindrome (98733789).

The spelling of 13330458 in words is "thirteen million, three hundred thirty thousand, four hundred fifty-eight".

Divisors: 1 2 3 6 9 18 740581 1481162 2221743 4443486 6665229 13330458