199426320 has 160 divisors (see below), whose sum is σ = 727453440. Its totient is φ = 50042880.

The previous prime is 199426319. The next prime is 199426361. The reversal of 199426320 is 23624991.

199426320 is a `hidden beast` number, since 19 + 9 + 4 + 2 + 632 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34005 + ... + 39435.

It is an arithmetic number, because the mean of its divisors is an integer number (4546584).

Almost surely, 2^199426320 is an apocalyptic number.

199426320 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 199426320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363726720).

199426320 is an abundant number, since it is smaller than the sum of its proper divisors (528027120).

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

199426320 is a wasteful number, since it uses less digits than its factorization.

199426320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5470 (or 5458 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 199426320 is about 14121.8384072330. The cubic root of 199426320 is about 584.2438620015.

It can be divided in two parts, 19942 and 6320, that added together give a palindrome (26262).

The spelling of 199426320 in words is "one hundred ninety-nine million, four hundred twenty-six thousand, three hundred twenty".