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26668388 = 2219933503
BaseRepresentation
bin110010110111…
…0110101100100
31212011220011002
41211232311210
523311342023
62351332432
7442451255
oct145566544
955156132
1026668388
111406539a
128b21118
1356a9716
143782b2c
15251bb28
hex196ed64

26668388 has 12 divisors (see below), whose sum is σ = 46905600. Its totient is φ = 13266792.

The previous prime is 26668387. The next prime is 26668399. The reversal of 26668388 is 88386662.

It is a happy number.

It is a super-3 number, since 3×266683883 (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (26668387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15956 + ... + 17547.

It is an arithmetic number, because the mean of its divisors is an integer number (3908800).

Almost surely, 226668388 is an apocalyptic number.

It is an amenable number.

26668388 is a deficient number, since it is larger than the sum of its proper divisors (20237212).

26668388 is a wasteful number, since it uses less digits than its factorization.

26668388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33706 (or 33704 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 26668388 is about 5164.1444596370. The cubic root of 26668388 is about 298.7667446250.

The spelling of 26668388 in words is "twenty-six million, six hundred sixty-eight thousand, three hundred eighty-eight".

Divisors: 1 2 4 199 398 796 33503 67006 134012 6667097 13334194 26668388