19822020 has 48 divisors (see below), whose sum is σ = 57297408. Its totient is φ = 5114880.

The previous prime is 19822007. The next prime is 19822027. The reversal of 19822020 is 2022891.

19822020 = 150² + 151² + ... + 397².

It is not an unprimeable number, because it can be changed into a prime (19822027) 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 15 ways as a sum of consecutive naturals, for example, 3469 + ... + 7188.

It is an arithmetic number, because the mean of its divisors is an integer number (1193696).

Almost surely, 2^19822020 is an apocalyptic number.

19822020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19822020 is an abundant number, since it is smaller than the sum of its proper divisors (37475388).

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

19822020 is a wasteful number, since it uses less digits than its factorization.

19822020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10700 (or 10698 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 19822020 is about 4452.1927182008. The cubic root of 19822020 is about 270.6341745828.

The spelling of 19822020 in words is "nineteen million, eight hundred twenty-two thousand, twenty".