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213284080 = 2452666051
BaseRepresentation
bin11001011011001…
…11010011110000
3112212022221202101
430231213103300
5414100042310
633055230144
75166612322
oct1455472360
9485287671
10213284080
11aa436539
125b518354
13352588c9
142047d612
1513ad043a
hexcb674f0

213284080 has 20 divisors (see below), whose sum is σ = 495885672. Its totient is φ = 85313600.

The previous prime is 213284059. The next prime is 213284089. The reversal of 213284080 is 80482312.

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 (213284089) 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, 1332946 + ... + 1333105.

Almost surely, 2213284080 is an apocalyptic number.

213284080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213284080 is an abundant number, since it is smaller than the sum of its proper divisors (282601592).

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

213284080 is a wasteful number, since it uses less digits than its factorization.

213284080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666064 (or 2666058 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 213284080 is about 14604.2486968690. The cubic root of 213284080 is about 597.4746451429.

The spelling of 213284080 in words is "two hundred thirteen million, two hundred eighty-four thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 2666051 5332102 10664204 13330255 21328408 26660510 42656816 53321020 106642040 213284080