20691092 has 12 divisors (see below), whose sum is σ = 36980160. Its totient is φ = 10125336.

The previous prime is 20691079. The next prime is 20691109. The reversal of 20691092 is 29019602.

It is a hoax number, since the sum of its digits (29) 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54842 + ... + 55217.

It is an arithmetic number, because the mean of its divisors is an integer number (3081680).

Almost surely, 2^20691092 is an apocalyptic number.

It is an amenable number.

20691092 is a deficient number, since it is larger than the sum of its proper divisors (16289068).

20691092 is a wasteful number, since it uses less digits than its factorization.

20691092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110110 (or 110108 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 20691092 is about 4548.7462008778. The cubic root of 20691092 is about 274.5329460579.

The spelling of 20691092 in words is "twenty million, six hundred ninety-one thousand, ninety-two".