199674720 has 480 divisors, whose sum is σ = 843042816. Its totient is φ = 43545600.

The previous prime is 199674653. The next prime is 199674731. The reversal of 199674720 is 27476991.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2812285 + ... + 2812355.

Almost surely, 2^199674720 is an apocalyptic number.

199674720 is a gapful number since it is divisible by the number (10) 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 199674720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421521408).

199674720 is an abundant number, since it is smaller than the sum of its proper divisors (643368096).

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

199674720 is a wasteful number, since it uses less digits than its factorization.

199674720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 199674720 is about 14130.6305591789. The cubic root of 199674720 is about 584.4863341117.

The spelling of 199674720 in words is "one hundred ninety-nine million, six hundred seventy-four thousand, seven hundred twenty".