20424733 has 8 divisors (see below), whose sum is σ = 23375552. Its totient is φ = 17482176.

The previous prime is 20424731. The next prime is 20424773. The reversal of 20424733 is 33742402.

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

It is a cyclic number.

It is not a de Polignac number, because 20424733 - 2¹ = 20424731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20424698 and 20424707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424731) 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, 4741 + ... + 7957.

It is an arithmetic number, because the mean of its divisors is an integer number (2921944).

Almost surely, 2^20424733 is an apocalyptic number.

It is an amenable number.

20424733 is a deficient number, since it is larger than the sum of its proper divisors (2950819).

20424733 is an equidigital number, since it uses as much as digits as its factorization.

20424733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 20424733 is about 4519.3730759918. The cubic root of 20424733 is about 273.3498223578.

The spelling of 20424733 in words is "twenty million, four hundred twenty-four thousand, seven hundred thirty-three".