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20117060 = 2254124533
BaseRepresentation
bin100110010111…
…1011001000100
31101212001102022
41030233121010
520122221220
61555102312
7332664215
oct114573104
941761368
1020117060
11103a0277
1268a1998
1342247b2
14295940c
151b75925
hex132f644

20117060 has 24 divisors (see below), whose sum is σ = 43277976. Its totient is φ = 7850240.

The previous prime is 20117059. The next prime is 20117089. The reversal of 20117060 is 6071102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1592644 + 18524416 = 1262^2 + 4304^2 .

It is a super-2 number, since 2×201170602 = 809392206087200, which contains 22 as substring.

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, 11447 + ... + 13086.

It is an arithmetic number, because the mean of its divisors is an integer number (1803249).

Almost surely, 220117060 is an apocalyptic number.

20117060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20117060 is an abundant number, since it is smaller than the sum of its proper divisors (23160916).

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

20117060 is a wasteful number, since it uses less digits than its factorization.

20117060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24583 (or 24581 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 20117060 is about 4485.2045661263. The cubic root of 20117060 is about 271.9703146669.

Adding to 20117060 its reverse (6071102), we get a palindrome (26188162).

The spelling of 20117060 in words is "twenty million, one hundred seventeen thousand, sixty".

Divisors: 1 2 4 5 10 20 41 82 164 205 410 820 24533 49066 98132 122665 245330 490660 1005853 2011706 4023412 5029265 10058530 20117060