190668620 has 48 divisors (see below), whose sum is σ = 432250560. Its totient is φ = 70430976.

The previous prime is 190668619. The next prime is 190668641. The reversal of 190668620 is 26866091.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6194 + ... + 20486.

It is an arithmetic number, because the mean of its divisors is an integer number (9005220).

Almost surely, 2^190668620 is an apocalyptic number.

190668620 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 190668620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216125280).

190668620 is an abundant number, since it is smaller than the sum of its proper divisors (241581940).

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

190668620 is a wasteful number, since it uses less digits than its factorization.

190668620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14354 (or 14352 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 190668620 is about 13808.2808488240. The cubic root of 190668620 is about 575.5632741194.

The spelling of 190668620 in words is "one hundred ninety million, six hundred sixty-eight thousand, six hundred twenty".