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90626868 = 223215531621
BaseRepresentation
bin1010110011011…
…01101100110100
320022112022200200
411121231230310
5141200024433
612554240500
72150213163
oct531555464
9208468620
1090626868
114717a342
1226426130
1315a11387
14c0713da
157e52613
hex566db34

90626868 has 36 divisors (see below), whose sum is σ = 229373508. Its totient is φ = 30170880.

The previous prime is 90626863. The next prime is 90626917. The reversal of 90626868 is 86862609.

It can be written as a sum of positive squares in 2 ways, for example, as 37307664 + 53319204 = 6108^2 + 7302^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90626863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55098 + ... + 56718.

Almost surely, 290626868 is an apocalyptic number.

It is an amenable number.

90626868 is an abundant number, since it is smaller than the sum of its proper divisors (138746640).

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

90626868 is a wasteful number, since it uses less digits than its factorization.

90626868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184 (or 3179 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 90626868 is about 9519.8144939909. The cubic root of 90626868 is about 449.1785309613.

The spelling of 90626868 in words is "ninety million, six hundred twenty-six thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 1553 1621 3106 3242 4659 4863 6212 6484 9318 9726 13977 14589 18636 19452 27954 29178 55908 58356 2517413 5034826 7552239 10069652 15104478 22656717 30208956 45313434 90626868