20874634424 has 96 divisors (see below), whose sum is σ = 48941871840. Its totient is φ = 8148049920.

The previous prime is 20874634399. The next prime is 20874634427. The reversal of 20874634424 is 42443647802.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20874634427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 903464 + ... + 926280.

It is an arithmetic number, because the mean of its divisors is an integer number (509811165).

Almost surely, 2^20874634424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20874634424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24470935920).

20874634424 is an abundant number, since it is smaller than the sum of its proper divisors (28067237416).

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

20874634424 is a wasteful number, since it uses less digits than its factorization.

20874634424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22909 (or 22874 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 44.

The spelling of 20874634424 in words is "twenty billion, eight hundred seventy-four million, six hundred thirty-four thousand, four hundred twenty-four".