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53808222 = 23134361263
BaseRepresentation
bin1100110101000…
…0110001011110
310202020202000010
43031100301132
5102233330342
65201144050
71222235166
oct315206136
9122222003
1053808222
1128411a06
121602b026
13b1bc8b0
1472095a6
154acd29c
hex3350c5e

53808222 has 64 divisors (see below), whose sum is σ = 120992256. Its totient is φ = 15845760.

The previous prime is 53808217. The next prime is 53808229. The reversal of 53808222 is 22280835.

53808222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 53808222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53808229) 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 31 ways as a sum of consecutive naturals, for example, 204463 + ... + 204725.

It is an arithmetic number, because the mean of its divisors is an integer number (1890504).

Almost surely, 253808222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53808222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60496128).

53808222 is an abundant number, since it is smaller than the sum of its proper divisors (67184034).

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

53808222 is a wasteful number, since it uses less digits than its factorization.

53808222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 53808222 is about 7335.4087820653. The cubic root of 53808222 is about 377.5283302569.

The spelling of 53808222 in words is "fifty-three million, eight hundred eight thousand, two hundred twenty-two".

Divisors: 1 2 3 6 13 26 39 43 61 78 86 122 129 183 258 263 366 526 559 789 793 1118 1578 1586 1677 2379 2623 3354 3419 4758 5246 6838 7869 10257 11309 15738 16043 20514 22618 32086 33927 34099 48129 67854 68198 96258 102297 147017 204594 208559 294034 417118 441051 625677 689849 882102 1251354 1379698 2069547 4139094 8968037 17936074 26904111 53808222