21068762 has 48 divisors (see below), whose sum is σ = 38632776. Its totient is φ = 8553600.

The previous prime is 21068741. The next prime is 21068807. The reversal of 21068762 is 26786012.

It can be written as a sum of positive squares in 4 ways, for example, as 12313081 + 8755681 = 3509^2 + 2959^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116312 + ... + 116492.

Almost surely, 2^21068762 is an apocalyptic number.

21068762 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21068762 is a deficient number, since it is larger than the sum of its proper divisors (17564014).

21068762 is a wasteful number, since it uses less digits than its factorization.

21068762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 21068762 is about 4590.0721127233. The cubic root of 21068762 is about 276.1932151938.

The spelling of 21068762 in words is "twenty-one million, sixty-eight thousand, seven hundred sixty-two".