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21143334 = 2318119469
BaseRepresentation
bin101000010100…
…1111100100110
31110210012012110
41100221330212
520403041314
62033101450
7344500242
oct120517446
943705173
1021143334
1110a31333
1270b7886
1344c3964
142b45422
151cc9a59
hex1429f26

21143334 has 16 divisors (see below), whose sum is σ = 42522480. Its totient is φ = 7008480.

The previous prime is 21143327. The next prime is 21143357. The reversal of 21143334 is 43334112.

It is a self number, because there is not a number n which added to its sum of digits gives 21143334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8649 + ... + 10820.

It is an arithmetic number, because the mean of its divisors is an integer number (2657655).

Almost surely, 221143334 is an apocalyptic number.

21143334 is an abundant number, since it is smaller than the sum of its proper divisors (21379146).

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

21143334 is a wasteful number, since it uses less digits than its factorization.

21143334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19655.

The product of its digits is 864, while the sum is 21.

The square root of 21143334 is about 4598.1881214235. The cubic root of 21143334 is about 276.5186895971.

Adding to 21143334 its reverse (43334112), we get a palindrome (64477446).

The spelling of 21143334 in words is "twenty-one million, one hundred forty-three thousand, three hundred thirty-four".