21069292 has 6 divisors (see below), whose sum is σ = 36871268. Its totient is φ = 10534644.

The previous prime is 21069287. The next prime is 21069319. The reversal of 21069292 is 29296012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2633658 + ... + 2633665.

Almost surely, 2^21069292 is an apocalyptic number.

It is an amenable number.

21069292 is a deficient number, since it is larger than the sum of its proper divisors (15801976).

21069292 is a wasteful number, since it uses less digits than its factorization.

21069292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5267327 (or 5267325 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 21069292 is about 4590.1298456580. The cubic root of 21069292 is about 276.1955311213.

The spelling of 21069292 in words is "twenty-one million, sixty-nine thousand, two hundred ninety-two".