219780012 has 24 divisors (see below), whose sum is σ = 542986416. Its totient is φ = 68950528.

The previous prime is 219779969. The next prime is 219780017. The reversal of 219780012 is 210087912.

219780012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (219780017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538473 + ... + 538880.

It is an arithmetic number, because the mean of its divisors is an integer number (22624434).

Almost surely, 2^219780012 is an apocalyptic number.

It is an amenable number.

219780012 is an abundant number, since it is smaller than the sum of its proper divisors (323206404).

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

219780012 is a wasteful number, since it uses less digits than its factorization.

219780012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077377 (or 1077375 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 219780012 is about 14824.9793254493. The cubic root of 219780012 is about 603.4797905256.

The spelling of 219780012 in words is "two hundred nineteen million, seven hundred eighty thousand, twelve".