20969692 has 12 divisors (see below), whose sum is σ = 38628520. Its totient is φ = 9932976.

The previous prime is 20969677. The next prime is 20969719. The reversal of 20969692 is 29696902.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137883 + ... + 138034.

Almost surely, 2^20969692 is an apocalyptic number.

It is an amenable number.

20969692 is a deficient number, since it is larger than the sum of its proper divisors (17658828).

20969692 is a wasteful number, since it uses less digits than its factorization.

20969692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275940 (or 275938 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 20969692 is about 4579.2676270338. The cubic root of 20969692 is about 275.7596275859.

The spelling of 20969692 in words is "twenty million, nine hundred sixty-nine thousand, six hundred ninety-two".