21060268 has 6 divisors (see below), whose sum is σ = 36855476. Its totient is φ = 10530132.

The previous prime is 21060257. The next prime is 21060269. The reversal of 21060268 is 86206012.

It is not an unprimeable number, because it can be changed into a prime (21060269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2632530 + ... + 2632537.

Almost surely, 2^21060268 is an apocalyptic number.

It is an amenable number.

21060268 is a deficient number, since it is larger than the sum of its proper divisors (15795208).

21060268 is a wasteful number, since it uses less digits than its factorization.

21060268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265071 (or 5265069 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 21060268 is about 4589.1467616541. The cubic root of 21060268 is about 276.1560938779.

The spelling of 21060268 in words is "twenty-one million, sixty thousand, two hundred sixty-eight".