20111092 has 6 divisors (see below), whose sum is σ = 35194418. Its totient is φ = 10055544.

The previous prime is 20111087. The next prime is 20111093. The reversal of 20111092 is 29011102.

It can be written as a sum of positive squares in only one way, i.e., 18974736 + 1136356 = 4356^2 + 1066^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513883 + ... + 2513890.

Almost surely, 2^20111092 is an apocalyptic number.

It is an amenable number.

20111092 is a deficient number, since it is larger than the sum of its proper divisors (15083326).

20111092 is a wasteful number, since it uses less digits than its factorization.

20111092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027777 (or 5027775 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 20111092 is about 4484.5392182475. The cubic root of 20111092 is about 271.9434174402.

Adding to 20111092 its reverse (29011102), we get a palindrome (49122194).

The spelling of 20111092 in words is "twenty million, one hundred eleven thousand, ninety-two".