20424494 has 8 divisors (see below), whose sum is σ = 30665640. Its totient is φ = 10202616.

The previous prime is 20424493. The next prime is 20424511. The reversal of 20424494 is 49442402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1784 + ... + 6635.

It is an arithmetic number, because the mean of its divisors is an integer number (3833205).

Almost surely, 2^20424494 is an apocalyptic number.

20424494 is a deficient number, since it is larger than the sum of its proper divisors (10241146).

20424494 is a wasteful number, since it uses less digits than its factorization.

20424494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9634.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 20424494 is about 4519.3466341939. The cubic root of 20424494 is about 273.3487561527.

Adding to 20424494 its reverse (49442402), we get a palindrome (69866896).

The spelling of 20424494 in words is "twenty million, four hundred twenty-four thousand, four hundred ninety-four".