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23066620 = 2251767843
BaseRepresentation
bin101011111111…
…1011111111100
31121101220110021
41113333133330
521401112440
62142221524
7400030423
oct127773774
947356407
1023066620
1112025325
1278848a4
134a181b5
1430c62ba
15205984a
hex15ff7fc

23066620 has 24 divisors (see below), whose sum is σ = 51290064. Its totient is φ = 8683776.

The previous prime is 23066591. The next prime is 23066623. The reversal of 23066620 is 2666032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23066623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33582 + ... + 34261.

It is an arithmetic number, because the mean of its divisors is an integer number (2137086).

Almost surely, 223066620 is an apocalyptic number.

23066620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23066620 is an abundant number, since it is smaller than the sum of its proper divisors (28223444).

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

23066620 is a wasteful number, since it uses less digits than its factorization.

23066620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67869 (or 67867 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23066620 is about 4802.7721161846. The cubic root of 23066620 is about 284.6610107221.

The spelling of 23066620 in words is "twenty-three million, sixty-six thousand, six hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 67843 135686 271372 339215 678430 1153331 1356860 2306662 4613324 5766655 11533310 23066620