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20726060 = 22517471297
BaseRepresentation
bin100111100010…
…0000100101100
31102222222210212
41033010010230
520301213220
62020121552
7341111555
oct117040454
942888725
1020726060
1110776883
126b362b8
1343a8a54
142a7732c
151c460c5
hex13c412c

20726060 has 48 divisors (see below), whose sum is σ = 47101824. Its totient is φ = 7630848.

The previous prime is 20726047. The next prime is 20726081. The reversal of 20726060 is 6062702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15332 + ... + 16628.

It is an arithmetic number, because the mean of its divisors is an integer number (981288).

Almost surely, 220726060 is an apocalyptic number.

20726060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20726060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23550912).

20726060 is an abundant number, since it is smaller than the sum of its proper divisors (26375764).

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

20726060 is a wasteful number, since it uses less digits than its factorization.

20726060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20726060 is about 4552.5882748169. The cubic root of 20726060 is about 274.6875128186.

Adding to 20726060 its reverse (6062702), we get a palindrome (26788762).

The spelling of 20726060 in words is "twenty million, seven hundred twenty-six thousand, sixty".

Divisors: 1 2 4 5 10 17 20 34 47 68 85 94 170 188 235 340 470 799 940 1297 1598 2594 3196 3995 5188 6485 7990 12970 15980 22049 25940 44098 60959 88196 110245 121918 220490 243836 304795 440980 609590 1036303 1219180 2072606 4145212 5181515 10363030 20726060