199604736 has 100 divisors (see below), whose sum is σ = 595891362. Its totient is φ = 66521088.

The previous prime is 199604719. The next prime is 199604759. The reversal of 199604736 is 637406991.

199604736 is a `hidden beast` number, since 1 + 9 + 9 + 604 + 7 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 149817600 + 49787136 = 12240^2 + 7056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 199604691 and 199604700.

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 9 ways as a sum of consecutive naturals, for example, 39066 + ... + 43878.

Almost surely, 2^199604736 is an apocalyptic number.

199604736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199604736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297945681).

199604736 is an abundant number, since it is smaller than the sum of its proper divisors (396286626).

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

199604736 is an frugal number, since it uses more digits than its factorization.

199604736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843 (or 4818 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 199604736 is about 14128.1540195455. The cubic root of 199604736 is about 584.4180405867.

The spelling of 199604736 in words is "one hundred ninety-nine million, six hundred four thousand, seven hundred thirty-six".