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9048400720 = 245113105009
BaseRepresentation
bin10000110110101001…
…11010001101010000
3212100121011101022121
420123110322031100
5122012342310340
64053510344024
7440141065012
oct103324721520
925317141277
109048400720
11392364a427
12190635b014
13b127c8788
1461ba141b2
1537e58c94a
hex21b53a350

9048400720 has 20 divisors (see below), whose sum is σ = 21037531860. Its totient is φ = 3619360256.

The previous prime is 9048400687. The next prime is 9048400729. The reversal of 9048400720 is 270048409.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4544917056 + 4503483664 = 67416^2 + 67108^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9048400729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56552425 + ... + 56552584.

It is an arithmetic number, because the mean of its divisors is an integer number (1051876593).

Almost surely, 29048400720 is an apocalyptic number.

It is an amenable number.

9048400720 is an abundant number, since it is smaller than the sum of its proper divisors (11989131140).

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

9048400720 is a wasteful number, since it uses less digits than its factorization.

9048400720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113105022 (or 113105016 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 9048400720 is about 95123.0819517534. The cubic root of 9048400720 is about 2083.8059569577.

The spelling of 9048400720 in words is "nine billion, forty-eight million, four hundred thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 113105009 226210018 452420036 565525045 904840072 1131050090 1809680144 2262100180 4524200360 9048400720