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20746108 = 225397859
BaseRepresentation
bin100111100100…
…0111101111100
31110001000022101
41033020331330
520302333413
62020354444
7341224165
oct117107574
943030271
1020746108
111078a949
126b45a24
1343b4c06
142a8076c
151c4bedd
hex13c8f7c

20746108 has 12 divisors (see below), whose sum is σ = 36991080. Its totient is φ = 10177232.

The previous prime is 20746097. The next prime is 20746109. The reversal of 20746108 is 80164702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20746109) 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, 48718 + ... + 49141.

It is an arithmetic number, because the mean of its divisors is an integer number (3082590).

Almost surely, 220746108 is an apocalyptic number.

It is an amenable number.

20746108 is a deficient number, since it is larger than the sum of its proper divisors (16244972).

20746108 is a wasteful number, since it uses less digits than its factorization.

20746108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97916 (or 97914 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20746108 is about 4554.7895670382. The cubic root of 20746108 is about 274.7760512837.

The spelling of 20746108 in words is "twenty million, seven hundred forty-six thousand, one hundred eight".

Divisors: 1 2 4 53 106 212 97859 195718 391436 5186527 10373054 20746108