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20738080 = 2551111783
BaseRepresentation
bin100111100011…
…1000000100000
31110000121022001
41033013000200
520302104310
62020253344
7341161606
oct117070040
943017261
1020738080
1110784910
126b41254
1343b136c
142a7b876
151c4993a
hex13c7020

20738080 has 48 divisors (see below), whose sum is σ = 53452224. Its totient is φ = 7540480.

The previous prime is 20738057. The next prime is 20738119. The reversal of 20738080 is 8083702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4132 + ... + 7651.

It is an arithmetic number, because the mean of its divisors is an integer number (1113588).

Almost surely, 220738080 is an apocalyptic number.

20738080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20738080 is an abundant number, since it is smaller than the sum of its proper divisors (32714144).

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

20738080 is a wasteful number, since it uses less digits than its factorization.

20738080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11809 (or 11801 counting only the distinct ones).

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

The square root of 20738080 is about 4553.9082116354. The cubic root of 20738080 is about 274.7406038842.

It can be divided in two parts, 2073 and 8080, that added together give a triangular number (10153 = T142).

The spelling of 20738080 in words is "twenty million, seven hundred thirty-eight thousand, eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 160 176 220 352 440 880 1760 11783 23566 47132 58915 94264 117830 129613 188528 235660 259226 377056 471320 518452 648065 942640 1036904 1296130 1885280 2073808 2592260 4147616 5184520 10369040 20738080