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2195070885 = 325721099133
BaseRepresentation
bin1000001011010110…
…0001111110100101
312122222102011011200
42002311201332211
513443414232020
61001451553113
7105252536400
oct20265417645
95588364150
102195070885
11a27073277
1251315b799
1328c9c6c17
1416b756d37
15cca96590
hex82d61fa5

2195070885 has 72 divisors (see below), whose sum is σ = 4467074040. Its totient is φ = 994146048.

The previous prime is 2195070877. The next prime is 2195070887. The reversal of 2195070885 is 5880705912.

It is a happy number.

2195070885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 666104481 + 1528966404 = 25809^2 + 39102^2 .

It is not a de Polignac number, because 2195070885 - 23 = 2195070877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2195070885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195070887) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 235779 + ... + 244911.

It is an arithmetic number, because the mean of its divisors is an integer number (62042695).

Almost surely, 22195070885 is an apocalyptic number.

It is an amenable number.

2195070885 is an abundant number, since it is smaller than the sum of its proper divisors (2272003155).

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

2195070885 is a wasteful number, since it uses less digits than its factorization.

2195070885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9267 (or 9257 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The square root of 2195070885 is about 46851.5835911658. The cubic root of 2195070885 is about 1299.6193925233.

The spelling of 2195070885 in words is "two billion, one hundred ninety-five million, seventy thousand, eight hundred eighty-five".

Divisors: 1 3 5 7 9 15 21 35 45 49 63 105 109 147 245 315 327 441 545 735 763 981 1635 2205 2289 3815 4905 5341 6867 9133 11445 16023 26705 27399 34335 45665 48069 63931 80115 82197 136995 191793 240345 319655 410985 447517 575379 958965 995497 1342551 2237585 2876895 2986491 4027653 4977485 6712755 6968479 8959473 14932455 20138265 20905437 34842395 44797365 48779353 62716311 104527185 146338059 243896765 313581555 439014177 731690295 2195070885