219812020 has 24 divisors (see below), whose sum is σ = 464444064. Its totient is φ = 87384096.

The previous prime is 219811901. The next prime is 219812027. The reversal of 219812020 is 20218912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219812027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30454 + ... + 36973.

It is an arithmetic number, because the mean of its divisors is an integer number (19351836).

Almost surely, 2^219812020 is an apocalyptic number.

219812020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219812020 is an abundant number, since it is smaller than the sum of its proper divisors (244632044).

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

219812020 is a wasteful number, since it uses less digits than its factorization.

219812020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67599 (or 67597 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 219812020 is about 14826.0588154776. The cubic root of 219812020 is about 603.5090853393.

The spelling of 219812020 in words is "two hundred nineteen million, eight hundred twelve thousand, twenty".