20490092 has 24 divisors (see below), whose sum is σ = 41094144. Its totient is φ = 8757072.

The previous prime is 20490091. The next prime is 20490097. The reversal of 20490092 is 29009402.

It is not an unprimeable number, because it can be changed into a prime (20490091) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12293 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (1712256).

Almost surely, 2^20490092 is an apocalyptic number.

It is an amenable number.

20490092 is an abundant number, since it is smaller than the sum of its proper divisors (20604052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20490092 is a wasteful number, since it uses less digits than its factorization.

20490092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2043 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20490092 is about 4526.5982812704. The cubic root of 20490092 is about 273.6410843938.

Adding to 20490092 its reverse (29009402), we get a palindrome (49499494).

The spelling of 20490092 in words is "twenty million, four hundred ninety thousand, ninety-two".