219468140 has 24 divisors (see below), whose sum is σ = 462922992. Its totient is φ = 87398720.

The previous prime is 219468133. The next prime is 219468157. The reversal of 219468140 is 41864912.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 219468140.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19631 + ... + 28710.

It is an arithmetic number, because the mean of its divisors is an integer number (19288458).

Almost surely, 2^219468140 is an apocalyptic number.

219468140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219468140 is an abundant number, since it is smaller than the sum of its proper divisors (243454852).

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

219468140 is a wasteful number, since it uses less digits than its factorization.

219468140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48577 (or 48575 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 219468140 is about 14814.4571280894. The cubic root of 219468140 is about 603.1942056483.

The spelling of 219468140 in words is "two hundred nineteen million, four hundred sixty-eight thousand, one hundred forty".