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2012013020 = 2256110715413
BaseRepresentation
bin111011111101100…
…1110000111011100
312012012221211222202
41313323032013130
513110033404040
6531352231032
7100600554113
oct16773160734
95165854882
102012013020
11942802186
1248199b478
13260ac2264
14151304c7a
15bb987015
hex77ece1dc

2012013020 has 48 divisors (see below), whose sum is σ = 4334910048. Its totient is φ = 784162560.

The previous prime is 2012013013. The next prime is 2012013023. The reversal of 2012013020 is 203102102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2012012992 and 2012013010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012013023) 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, 122834 + ... + 138246.

It is an arithmetic number, because the mean of its divisors is an integer number (90310626).

Almost surely, 22012013020 is an apocalyptic number.

2012013020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012013020 is an abundant number, since it is smaller than the sum of its proper divisors (2322897028).

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

2012013020 is a wasteful number, since it uses less digits than its factorization.

2012013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15590 (or 15588 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2012013020 is about 44855.4681170535. The cubic root of 2012013020 is about 1262.4385921836.

Adding to 2012013020 its reverse (203102102), we get a palindrome (2215115122).

The spelling of 2012013020 in words is "two billion, twelve million, thirteen thousand, twenty".

Divisors: 1 2 4 5 10 20 61 107 122 214 244 305 428 535 610 1070 1220 2140 6527 13054 15413 26108 30826 32635 61652 65270 77065 130540 154130 308260 940193 1649191 1880386 3298382 3760772 4700965 6596764 8245955 9401930 16491910 18803860 32983820 100600651 201201302 402402604 503003255 1006006510 2012013020