199768448 has 64 divisors (see below), whose sum is σ = 442512720. Its totient is φ = 89057280.

The previous prime is 199768403. The next prime is 199768469. The reversal of 199768448 is 844867991.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 199768393 and 199768402.

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, 73286 + ... + 75962.

Almost surely, 2^199768448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199768448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221256360).

199768448 is an abundant number, since it is smaller than the sum of its proper divisors (242744272).

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

199768448 is a wasteful number, since it uses less digits than its factorization.

199768448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755 (or 2743 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The square root of 199768448 is about 14133.9466533591. The cubic root of 199768448 is about 584.5777731041.

The spelling of 199768448 in words is "one hundred ninety-nine million, seven hundred sixty-eight thousand, four hundred forty-eight".