190168440 has 192 divisors, whose sum is σ = 717050880. Its totient is φ = 39494400.

The previous prime is 190168423. The next prime is 190168441. The reversal of 190168440 is 44861091.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190168441) 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 47 ways as a sum of consecutive naturals, for example, 100705 + ... + 102575.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^190168440 is an apocalyptic number.

190168440 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 190168440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358525440).

190168440 is an abundant number, since it is smaller than the sum of its proper divisors (526882440).

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

190168440 is a wasteful number, since it uses less digits than its factorization.

190168440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914 (or 1899 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 190168440 is about 13790.1573595083. The cubic root of 190168440 is about 575.0595426683.

The spelling of 190168440 in words is "one hundred ninety million, one hundred sixty-eight thousand, four hundred forty".