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13458830 = 2572112227
BaseRepresentation
bin110011010101…
…110110001110
3221022210001012
4303111312032
511421140310
61200245222
7222253400
oct63256616
927283035
1013458830
117662900
124610812
132a33008
141b04b70
1512acc05
hexcd5d8e

13458830 has 72 divisors (see below), whose sum is σ = 31112424. Its totient is φ = 4176480.

The previous prime is 13458829. The next prime is 13458839. The reversal of 13458830 is 3885431.

It is a happy number.

It is a super-2 number, since 2×134588302 = 362280209937800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13458839) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 59177 + ... + 59403.

It is an arithmetic number, because the mean of its divisors is an integer number (432117).

Almost surely, 213458830 is an apocalyptic number.

13458830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13458830 is an abundant number, since it is smaller than the sum of its proper divisors (17653594).

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

13458830 is a wasteful number, since it uses less digits than its factorization.

13458830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 13458830 is about 3668.6278088681. The cubic root of 13458830 is about 237.8678620599.

The spelling of 13458830 in words is "thirteen million, four hundred fifty-eight thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 11 14 22 35 49 55 70 77 98 110 121 154 227 242 245 385 454 490 539 605 770 847 1078 1135 1210 1589 1694 2270 2497 2695 3178 4235 4994 5390 5929 7945 8470 11123 11858 12485 15890 17479 22246 24970 27467 29645 34958 54934 55615 59290 87395 111230 122353 137335 174790 192269 244706 274670 384538 611765 961345 1223530 1345883 1922690 2691766 6729415 13458830