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21120332 = 225280083
BaseRepresentation
bin101000010010…
…0010101001100
31110202000122112
41100210111030
520401322312
62032403152
7344343212
oct120442514
943660575
1021120332
1110a16022
1270a64b8
1344b634c
142b3acb2
151cc2d22
hex142454c

21120332 has 6 divisors (see below), whose sum is σ = 36960588. Its totient is φ = 10560164.

The previous prime is 21120317. The next prime is 21120349. The reversal of 21120332 is 23302112.

It is a happy number.

It is a super-3 number, since 3×211203323 (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2640038 + ... + 2640045.

It is an arithmetic number, because the mean of its divisors is an integer number (6160098).

Almost surely, 221120332 is an apocalyptic number.

It is an amenable number.

21120332 is a deficient number, since it is larger than the sum of its proper divisors (15840256).

21120332 is a wasteful number, since it uses less digits than its factorization.

21120332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280087 (or 5280085 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 21120332 is about 4595.6862382021. The cubic root of 21120332 is about 276.4183775896.

Adding to 21120332 its reverse (23302112), we get a palindrome (44422444).

The spelling of 21120332 in words is "twenty-one million, one hundred twenty thousand, three hundred thirty-two".

Divisors: 1 2 4 5280083 10560166 21120332