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52354220 = 22517433581
BaseRepresentation
bin1100011110110…
…1110010101100
310122111212111012
43013231302230
5101400313340
65110044352
71204001132
oct307556254
9118455435
1052354220
1127609556
12156496b8
13ab00b39
146d4b752
1548e2565
hex31edcac

52354220 has 48 divisors (see below), whose sum is σ = 119151648. Its totient is φ = 19246080.

The previous prime is 52354207. The next prime is 52354231. The reversal of 52354220 is 2245325.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12830 + ... + 16410.

It is an arithmetic number, because the mean of its divisors is an integer number (2482326).

Almost surely, 252354220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52354220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59575824).

52354220 is an abundant number, since it is smaller than the sum of its proper divisors (66797428).

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

52354220 is a wasteful number, since it uses less digits than its factorization.

52354220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650 (or 3648 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 52354220 is about 7235.6216042576. The cubic root of 52354220 is about 374.0967178156.

Adding to 52354220 its reverse (2245325), we get a palindrome (54599545).

The spelling of 52354220 in words is "fifty-two million, three hundred fifty-four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 43 68 85 86 170 172 215 340 430 731 860 1462 2924 3581 3655 7162 7310 14324 14620 17905 35810 60877 71620 121754 153983 243508 304385 307966 608770 615932 769915 1217540 1539830 2617711 3079660 5235422 10470844 13088555 26177110 52354220