20424490746 has 32 divisors (see below), whose sum is σ = 44788759488. Its totient is φ = 6157818240.

The previous prime is 20424490663. The next prime is 20424490747. The reversal of 20424490746 is 64709442402.

It is a junction number, because it is equal to n+sod(n) for n = 20424490698 and 20424490707.

It is not an unprimeable number, because it can be changed into a prime (20424490747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772435 + ... + 798438.

It is an arithmetic number, because the mean of its divisors is an integer number (1399648734).

Almost surely, 2^20424490746 is an apocalyptic number.

20424490746 is an abundant number, since it is smaller than the sum of its proper divisors (24364268742).

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

20424490746 is a wasteful number, since it uses less digits than its factorization.

20424490746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571086.

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 20424490746 in words is "twenty billion, four hundred twenty-four million, four hundred ninety thousand, seven hundred forty-six".