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9209208380 = 2251727085907
BaseRepresentation
bin10001001001110100…
…10101111000111100
3212202210202020221212
420210322111320330
5122330024132010
64121453143552
7444132660011
oct104472257074
925683666855
109209208380
1139a63a3619
12195018abb8
13b39c0ca38
14635113708
1538d754505
hex224e95e3c

9209208380 has 24 divisors (see below), whose sum is σ = 20476946448. Its totient is φ = 3466995968.

The previous prime is 9209208353. The next prime is 9209208389. The reversal of 9209208380 is 838029029.

9209208380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9209208389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13542614 + ... + 13543293.

It is an arithmetic number, because the mean of its divisors is an integer number (853206102).

Almost surely, 29209208380 is an apocalyptic number.

It is an amenable number.

9209208380 is an abundant number, since it is smaller than the sum of its proper divisors (11267738068).

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

9209208380 is a wasteful number, since it uses less digits than its factorization.

9209208380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27085933 (or 27085931 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 9209208380 is about 95964.6204598341. The cubic root of 9209208380 is about 2096.0779691365.

The spelling of 9209208380 in words is "nine billion, two hundred nine million, two hundred eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 27085907 54171814 108343628 135429535 270859070 460460419 541718140 920920838 1841841676 2302302095 4604604190 9209208380