190797768 has 144 divisors (see below), whose sum is σ = 623684880. Its totient is φ = 54486432.

The previous prime is 190797767. The next prime is 190797773. The reversal of 190797768 is 867797091.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (190797767) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 94255 + ... + 96257.

It is an arithmetic number, because the mean of its divisors is an integer number (4331145).

Almost surely, 2^190797768 is an apocalyptic number.

190797768 is a gapful number since it is divisible by the number (18) 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 190797768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311842440).

190797768 is an abundant number, since it is smaller than the sum of its proper divisors (432887112).

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

190797768 is a wasteful number, since it uses less digits than its factorization.

190797768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038 (or 2015 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The square root of 190797768 is about 13812.9565263922. The cubic root of 190797768 is about 575.6931959861.

The spelling of 190797768 in words is "one hundred ninety million, seven hundred ninety-seven thousand, seven hundred sixty-eight".