20430424 has 16 divisors (see below), whose sum is σ = 43779600. Its totient is φ = 8755872.

The previous prime is 20430409. The next prime is 20430439. The reversal of 20430424 is 42403402.

It is an interprime number because it is at equal distance from previous prime (20430409) and next prime (20430439).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182359 + ... + 182470.

It is an arithmetic number, because the mean of its divisors is an integer number (2736225).

Almost surely, 2^20430424 is an apocalyptic number.

It is an amenable number.

20430424 is an abundant number, since it is smaller than the sum of its proper divisors (23349176).

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

20430424 is a wasteful number, since it uses less digits than its factorization.

20430424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364842 (or 364838 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 20430424 is about 4520.0026548665. The cubic root of 20430424 is about 273.3752080732.

Adding to 20430424 its reverse (42403402), we get a palindrome (62833826).

It can be divided in two parts, 204 and 30424, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 20430424 in words is "twenty million, four hundred thirty thousand, four hundred twenty-four".