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20130080 = 255125813
BaseRepresentation
bin100110011001…
…0100100100000
31101212201021112
41030302210200
520123130310
61555242452
7333050165
oct114624440
941781245
1020130080
11103aa033
1268a9428
13422a6b9
14296006c
151b79705
hex1332920

20130080 has 24 divisors (see below), whose sum is σ = 47557692. Its totient is φ = 8051968.

The previous prime is 20130079. The next prime is 20130163. The reversal of 20130080 is 8003102.

It can be written as a sum of positive squares in 2 ways, for example, as 16875664 + 3254416 = 4108^2 + 1804^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62747 + ... + 63066.

Almost surely, 220130080 is an apocalyptic number.

20130080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130080 is an abundant number, since it is smaller than the sum of its proper divisors (27427612).

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

20130080 is a wasteful number, since it uses less digits than its factorization.

20130080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125828 (or 125820 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20130080 is about 4486.6557701700. The cubic root of 20130080 is about 272.0289761518.

Adding to 20130080 its reverse (8003102), we get a palindrome (28133182).

The spelling of 20130080 in words is "twenty million, one hundred thirty thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 125813 251626 503252 629065 1006504 1258130 2013008 2516260 4026016 5032520 10065040 20130080