21160324 has 6 divisors (see below), whose sum is σ = 37030574. Its totient is φ = 10580160.

The previous prime is 21160313. The next prime is 21160331. The reversal of 21160324 is 42306112.

It can be written as a sum of positive squares in only one way, i.e., 21160000 + 324 = 4600^2 + 18^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2645037 + ... + 2645044.

Almost surely, 2^21160324 is an apocalyptic number.

It is an amenable number.

21160324 is a deficient number, since it is larger than the sum of its proper divisors (15870250).

21160324 is a wasteful number, since it uses less digits than its factorization.

21160324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290085 (or 5290083 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 21160324 is about 4600.0352172565. The cubic root of 21160324 is about 276.5927364922.

Adding to 21160324 its reverse (42306112), we get a palindrome (63466436).

The spelling of 21160324 in words is "twenty-one million, one hundred sixty thousand, three hundred twenty-four".