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213852960 = 2534529569
BaseRepresentation
bin11001011111100…
…10001100100000
3112220101212010000
430233302030200
5414221243320
633115340000
75204502006
oct1457621440
9486355100
10213852960
11aa794992
125b751600
13353c7819
142058aa76
1513b93c90
hexcbf2320

213852960 has 240 divisors, whose sum is σ = 782119800. Its totient is φ = 54964224.

The previous prime is 213852953. The next prime is 213852971. The reversal of 213852960 is 69258312.

It can be written as a sum of positive squares in 4 ways, for example, as 138579984 + 75272976 = 11772^2 + 8676^2 .

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 375556 + ... + 376124.

Almost surely, 2213852960 is an apocalyptic number.

213852960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213852960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391059900).

213852960 is an abundant number, since it is smaller than the sum of its proper divisors (568266840).

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

213852960 is a wasteful number, since it uses less digits than its factorization.

213852960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 213852960 is about 14623.7122509984. The cubic root of 213852960 is about 598.0053764762.

The spelling of 213852960 in words is "two hundred thirteen million, eight hundred fifty-two thousand, nine hundred sixty".