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69418 = 261569
BaseRepresentation
bin10000111100101010
310112020001
4100330222
54210133
61253214
7406246
oct207452
9115201
1069418
1148178
123420a
132579b
141b426
151587d
hex10f2a

69418 has 8 divisors (see below), whose sum is σ = 106020. Its totient is φ = 34080.

The previous prime is 69403. The next prime is 69427. The reversal of 69418 is 81496.

It can be written as a sum of positive squares in 2 ways, for example, as 54289 + 15129 = 233^2 + 123^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

69418 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163 + ... + 406.

269418 is an apocalyptic number.

69418 is a deficient number, since it is larger than the sum of its proper divisors (36602).

69418 is a wasteful number, since it uses less digits than its factorization.

69418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its digits is 1728, while the sum is 28.

The square root of 69418 is about 263.4729587643. The cubic root of 69418 is about 41.0983165011.

The spelling of 69418 in words is "sixty-nine thousand, four hundred eighteen".

Divisors: 1 2 61 122 569 1138 34709 69418