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69220 = 2253461
BaseRepresentation
bin10000111001100100
310111221201
4100321210
54203340
61252244
7405544
oct207144
9114851
1069220
1148008
1234084
1325678
141b324
151579a
hex10e64

69220 has 12 divisors (see below), whose sum is σ = 145404. Its totient is φ = 27680.

The previous prime is 69203. The next prime is 69221. The reversal of 69220 is 2296.

69220 = T73 + T74 + ... + T92.

It can be written as a sum of positive squares in 2 ways, for example, as 19044 + 50176 = 138^2 + 224^2 .

It is a plaindrome in base 13 and base 15.

It is not an unprimeable number, because it can be changed into a prime (69221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711 + ... + 1750.

It is an arithmetic number, because the mean of its divisors is an integer number (12117).

269220 is an apocalyptic number.

It is an amenable number.

69220 is an abundant number, since it is smaller than the sum of its proper divisors (76184).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72702).

69220 is a wasteful number, since it uses less digits than its factorization.

69220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470 (or 3468 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 69220 is about 263.0969403091. The cubic root of 69220 is about 41.0592045717.

It can be divided in two parts, 69 and 220, that added together give a square (289 = 172).

The spelling of 69220 in words is "sixty-nine thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 3461 6922 13844 17305 34610 69220