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20741444 = 2253227431
BaseRepresentation
bin100111100011…
…1110101000100
31110000202220122
41033013311010
520302211234
62020321112
7341204453
oct117076504
943022818
1020741444
1110787399
126b43198
1343b2a59
142a7cb9a
151c4a92e
hex13c7d44

20741444 has 24 divisors (see below), whose sum is σ = 37231488. Its totient is φ = 10106720.

The previous prime is 20741401. The next prime is 20741447. The reversal of 20741444 is 44414702.

It is not an unprimeable number, because it can be changed into a prime (20741447) 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, 47909 + ... + 48339.

It is an arithmetic number, because the mean of its divisors is an integer number (1551312).

Almost surely, 220741444 is an apocalyptic number.

It is an amenable number.

20741444 is a deficient number, since it is larger than the sum of its proper divisors (16490044).

20741444 is a wasteful number, since it uses less digits than its factorization.

20741444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 20741444 is about 4554.2775497328. The cubic root of 20741444 is about 274.7554586412.

The spelling of 20741444 in words is "twenty million, seven hundred forty-one thousand, four hundred forty-four".

Divisors: 1 2 4 53 106 212 227 431 454 862 908 1724 12031 22843 24062 45686 48124 91372 97837 195674 391348 5185361 10370722 20741444