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330405213 = 3569193559
BaseRepresentation
bin10011101100011…
…001010101011101
3212000201022202010
4103230121111131
51134040431323
652441421433
711121253335
oct2354312535
9760638663
10330405213
1115a561366
129279a879
13535b5358
1431c4a0c5
151e017c93
hex13b1955d

330405213 has 8 divisors (see below), whose sum is σ = 441316800. Its totient is φ = 219881888.

The previous prime is 330405211. The next prime is 330405263. The reversal of 330405213 is 312504033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 330405213 - 21 = 330405211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 330405213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330405211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95073 + ... + 98486.

It is an arithmetic number, because the mean of its divisors is an integer number (55164600).

Almost surely, 2330405213 is an apocalyptic number.

It is an amenable number.

330405213 is a deficient number, since it is larger than the sum of its proper divisors (110911587).

330405213 is a wasteful number, since it uses less digits than its factorization.

330405213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194131.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 330405213 is about 18177.0518236594. The cubic root of 330405213 is about 691.3250551196.

Adding to 330405213 its reverse (312504033), we get a palindrome (642909246).

The spelling of 330405213 in words is "three hundred thirty million, four hundred five thousand, two hundred thirteen".

Divisors: 1 3 569 1707 193559 580677 110135071 330405213