20430496 has 12 divisors (see below), whose sum is σ = 40222602. Its totient is φ = 10215232.

The previous prime is 20430469. The next prime is 20430499. The reversal of 20430496 is 69403402.

It can be written as a sum of positive squares in only one way, i.e., 12702096 + 7728400 = 3564^2 + 2780^2 .

It is not an unprimeable number, because it can be changed into a prime (20430499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319195 + ... + 319258.

Almost surely, 2^20430496 is an apocalyptic number.

It is an amenable number.

20430496 is a deficient number, since it is larger than the sum of its proper divisors (19792106).

20430496 is an equidigital number, since it uses as much as digits as its factorization.

20430496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638463 (or 638455 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20430496 is about 4520.0106194566. The cubic root of 20430496 is about 273.3755292118.

Adding to 20430496 its reverse (69403402), we get a palindrome (89833898).

The spelling of 20430496 in words is "twenty million, four hundred thirty thousand, four hundred ninety-six".