199216284 has 24 divisors (see below), whose sum is σ = 465187968. Its totient is φ = 66355440.

The previous prime is 199216249. The next prime is 199216309. The reversal of 199216284 is 482612991.

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, 12639 + ... + 23625.

It is an arithmetic number, because the mean of its divisors is an integer number (19382832).

Almost surely, 2^199216284 is an apocalyptic number.

It is an amenable number.

199216284 is an abundant number, since it is smaller than the sum of its proper divisors (265971684).

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

199216284 is a wasteful number, since it uses less digits than its factorization.

199216284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12505 (or 12503 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 199216284 is about 14114.3998809726. The cubic root of 199216284 is about 584.0386812122.

The spelling of 199216284 in words is "one hundred ninety-nine million, two hundred sixteen thousand, two hundred eighty-four".