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20012010 = 2354611447
BaseRepresentation
bin100110001010…
…1101111101010
31101122201022120
41030111233222
520110341020
61552532110
7332046024
oct114255752
941581276
1020012010
1110329357
126851036
1341b8a35
14292d014
151b54740
hex1315bea

20012010 has 32 divisors (see below), whose sum is σ = 48166272. Its totient is φ = 5321280.

The previous prime is 20011993. The next prime is 20012011. The reversal of 20012010 is 1021002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a self number, because there is not a number n which added to its sum of digits gives 20012010.

It is not an unprimeable number, because it can be changed into a prime (20012011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13107 + ... + 14553.

It is an arithmetic number, because the mean of its divisors is an integer number (1505196).

Almost surely, 220012010 is an apocalyptic number.

20012010 is an abundant number, since it is smaller than the sum of its proper divisors (28154262).

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

20012010 is a wasteful number, since it uses less digits than its factorization.

20012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 20012010 is about 4473.4785122989. The cubic root of 20012010 is about 271.4960843800.

Adding to 20012010 its reverse (1021002), we get a palindrome (21033012).

The spelling of 20012010 in words is "twenty million, twelve thousand, ten".

Divisors: 1 2 3 5 6 10 15 30 461 922 1383 1447 2305 2766 2894 4341 4610 6915 7235 8682 13830 14470 21705 43410 667067 1334134 2001201 3335335 4002402 6670670 10006005 20012010