20219842000 has 40 divisors (see below), whose sum is σ = 48891582792. Its totient is φ = 8087936000.

The previous prime is 20219841991. The next prime is 20219842021. The reversal of 20219842000 is 24891202.

It can be written as a sum of positive squares in 4 ways, for example, as 2899176336 + 17320665664 = 53844^2 + 131608^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 20219842000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5052961 + ... + 5056960.

Almost surely, 2^20219842000 is an apocalyptic number.

20219842000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20219842000 is an abundant number, since it is smaller than the sum of its proper divisors (28671740792).

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

20219842000 is a wasteful number, since it uses less digits than its factorization.

20219842000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10109944 (or 10109928 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 20219842000 in words is "twenty billion, two hundred nineteen million, eight hundred forty-two thousand".