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69018068 = 2272352133
BaseRepresentation
bin1000001110100…
…10000111010100
311210212110222202
410013102013110
5120132034233
610503144032
71465433600
oct407220724
9153773882
1069018068
1135a60329
121b145018
13113b68c2
149248500
1560d4be8
hex41d21d4

69018068 has 18 divisors (see below), whose sum is σ = 140501466. Its totient is φ = 29579088.

The previous prime is 69018067. The next prime is 69018077. The reversal of 69018068 is 86081096.

It can be written as a sum of positive squares in only one way, i.e., 68923204 + 94864 = 8302^2 + 308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69018067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175871 + ... + 176262.

It is an arithmetic number, because the mean of its divisors is an integer number (7805637).

Almost surely, 269018068 is an apocalyptic number.

It is an amenable number.

69018068 is an abundant number, since it is smaller than the sum of its proper divisors (71483398).

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

69018068 is a wasteful number, since it uses less digits than its factorization.

69018068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352151 (or 352142 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 69018068 is about 8307.7113575280. The cubic root of 69018068 is about 410.1923903740.

The spelling of 69018068 in words is "sixty-nine million, eighteen thousand, sixty-eight".

Divisors: 1 2 4 7 14 28 49 98 196 352133 704266 1408532 2464931 4929862 9859724 17254517 34509034 69018068