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69388 = 22111983
BaseRepresentation
bin10000111100001100
310112011221
4100330030
54210023
61253124
7406204
oct207414
9115157
1069388
1148150
12341a4
1325777
141b404
151585d
hex10f0c

69388 has 24 divisors (see below), whose sum is σ = 141120. Its totient is φ = 29520.

The previous prime is 69383. The next prime is 69389. The reversal of 69388 is 88396.

It is an Ulam number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (69383) by changing a digit.

69388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 795 + ... + 877.

It is an arithmetic number, because the mean of its divisors is an integer number (5880).

269388 is an apocalyptic number.

It is an amenable number.

69388 is an abundant number, since it is smaller than the sum of its proper divisors (71732).

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 (70560).

69388 is a wasteful number, since it uses less digits than its factorization.

69388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 115 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 69388 is about 263.4160207732. The cubic root of 69388 is about 41.0923952360.

The spelling of 69388 in words is "sixty-nine thousand, three hundred eighty-eight".

Divisors: 1 2 4 11 19 22 38 44 76 83 166 209 332 418 836 913 1577 1826 3154 3652 6308 17347 34694 69388