190868940 has 192 divisors, whose sum is σ = 627419520. Its totient is φ = 48107520.

The previous prime is 190868929. The next prime is 190868947. The reversal of 190868940 is 49868091.

190868940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190868947) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 819064 + ... + 819296.

It is an arithmetic number, because the mean of its divisors is an integer number (3267810).

Almost surely, 2^190868940 is an apocalyptic number.

190868940 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 190868940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313709760).

190868940 is an abundant number, since it is smaller than the sum of its proper divisors (436550580).

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

190868940 is a wasteful number, since it uses less digits than its factorization.

190868940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 190868940 is about 13815.5325630249. The cubic root of 190868940 is about 575.7647693995.

The spelling of 190868940 in words is "one hundred ninety million, eight hundred sixty-eight thousand, nine hundred forty".