20411492 has 18 divisors (see below), whose sum is σ = 37947042. Its totient is φ = 9604864.

The previous prime is 20411473. The next prime is 20411497. The reversal of 20411492 is 29411402.

It can be written as a sum of positive squares in 3 ways, for example, as 4218916 + 16192576 = 2054^2 + 4024^2 .

It is not an unprimeable number, because it can be changed into a prime (20411497) 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 5 ways as a sum of consecutive naturals, for example, 7673 + ... + 9984.

It is an arithmetic number, because the mean of its divisors is an integer number (2108169).

Almost surely, 2^20411492 is an apocalyptic number.

It is an amenable number.

20411492 is a deficient number, since it is larger than the sum of its proper divisors (17535550).

20411492 is a wasteful number, since it uses less digits than its factorization.

20411492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17695 (or 17676 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 20411492 is about 4517.9079229218. The cubic root of 20411492 is about 273.2907402731.

Adding to 20411492 its reverse (29411402), we get a palindrome (49822894).

The spelling of 20411492 in words is "twenty million, four hundred eleven thousand, four hundred ninety-two".