190791840 has 96 divisors (see below), whose sum is σ = 611271360. Its totient is φ = 50008064.

The previous prime is 190791829. The next prime is 190791857. The reversal of 190791840 is 48197091.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24952 + ... + 31688.

It is an arithmetic number, because the mean of its divisors is an integer number (6367410).

Almost surely, 2^190791840 is an apocalyptic number.

190791840 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 190791840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305635680).

190791840 is an abundant number, since it is smaller than the sum of its proper divisors (420479520).

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

190791840 is a wasteful number, since it uses less digits than its factorization.

190791840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814 (or 6806 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 190791840 is about 13812.7419435824. The cubic root of 190791840 is about 575.6872337490.

The spelling of 190791840 in words is "one hundred ninety million, seven hundred ninety-one thousand, eight hundred forty".