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42688026 = 233790519
BaseRepresentation
bin1010001011010…
…1111000011010
32222022202222000
42202311320122
541412004101
64122541430
71025561613
oct242657032
988282860
1042688026
1122107167
1212367876
138ac81b4
145952c0a
153b33486
hex28b5e1a

42688026 has 16 divisors (see below), whose sum is σ = 94862400. Its totient is φ = 14229324.

The previous prime is 42688021. The next prime is 42688033. The reversal of 42688026 is 62088624.

42688026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×426880263 (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42688021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395206 + ... + 395313.

It is an arithmetic number, because the mean of its divisors is an integer number (5928900).

Almost surely, 242688026 is an apocalyptic number.

42688026 is an abundant number, since it is smaller than the sum of its proper divisors (52174374).

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

42688026 is a wasteful number, since it uses less digits than its factorization.

42688026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790530 (or 790524 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 42688026 is about 6533.6074262233. The cubic root of 42688026 is about 349.4904858432.

The spelling of 42688026 in words is "forty-two million, six hundred eighty-eight thousand, twenty-six".

Divisors: 1 2 3 6 9 18 27 54 790519 1581038 2371557 4743114 7114671 14229342 21344013 42688026