190383840 has 288 divisors, whose sum is σ = 693463680. Its totient is φ = 47480832.

The previous prime is 190383827. The next prime is 190383847. The reversal of 190383840 is 48383091.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 190383795 and 190383804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190383847) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1962672 + ... + 1962768.

It is an arithmetic number, because the mean of its divisors is an integer number (2407860).

Almost surely, 2^190383840 is an apocalyptic number.

190383840 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 190383840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346731840).

190383840 is an abundant number, since it is smaller than the sum of its proper divisors (503079840).

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

190383840 is a wasteful number, since it uses less digits than its factorization.

190383840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 190383840 is about 13797.9650673569. The cubic root of 190383840 is about 575.2765802366.

The spelling of 190383840 in words is "one hundred ninety million, three hundred eighty-three thousand, eight hundred forty".