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88104581 = 293038089
BaseRepresentation
bin1010100000001…
…01111010000101
320010210011202122
411100011322011
5140023321311
612424215325
72116606445
oct520057205
9203704678
1088104581
1145807304
122560a545
131533a2b6
14b9b6125
157b050db
hex5405e85

88104581 has 4 divisors (see below), whose sum is σ = 91142700. Its totient is φ = 85066464.

The previous prime is 88104553. The next prime is 88104617. The reversal of 88104581 is 18540188.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63760225 + 24344356 = 7985^2 + 4934^2 .

It is a cyclic number.

It is not a de Polignac number, because 88104581 - 214 = 88088197 is a prime.

It is a super-2 number, since 2×881045812 = 15524834386371122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88104281) 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 3 ways as a sum of consecutive naturals, for example, 1519016 + ... + 1519073.

It is an arithmetic number, because the mean of its divisors is an integer number (22785675).

Almost surely, 288104581 is an apocalyptic number.

It is an amenable number.

88104581 is a deficient number, since it is larger than the sum of its proper divisors (3038119).

88104581 is a wasteful number, since it uses less digits than its factorization.

88104581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038118.

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 88104581 is about 9386.4040505403. The cubic root of 88104581 is about 444.9721499214.

The spelling of 88104581 in words is "eighty-eight million, one hundred four thousand, five hundred eighty-one".

Divisors: 1 29 3038089 88104581