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20010312196 = 2271742038471
BaseRepresentation
bin10010101000101101…
…010010001000000100
31220122112221011220221
4102220231102020010
5311440114442241
613105334234124
71305605563420
oct225055221004
956575834827
1020010312196
1185393327a6
123a654b5944
131b6b878624
14d7b80bb80
157c1b065d1
hex4a8b52204

20010312196 has 24 divisors (see below), whose sum is σ = 42374779776. Its totient is φ = 8071386240.

The previous prime is 20010312187. The next prime is 20010312221. The reversal of 20010312196 is 69121301002.

It is a self number, because there is not a number n which added to its sum of digits gives 20010312196.

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, 21018760 + ... + 21019711.

It is an arithmetic number, because the mean of its divisors is an integer number (1765615824).

Almost surely, 220010312196 is an apocalyptic number.

It is an amenable number.

20010312196 is an abundant number, since it is smaller than the sum of its proper divisors (22364467580).

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

20010312196 is a wasteful number, since it uses less digits than its factorization.

20010312196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42038499 (or 42038497 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 20010312196 its reverse (69121301002), we get a palindrome (89131613198).

The spelling of 20010312196 in words is "twenty billion, ten million, three hundred twelve thousand, one hundred ninety-six".

Divisors: 1 2 4 7 14 17 28 34 68 119 238 476 42038471 84076942 168153884 294269297 588538594 714654007 1177077188 1429308014 2858616028 5002578049 10005156098 20010312196