190068840 has 192 divisors, whose sum is σ = 704667600. Its totient is φ = 44015616.

The previous prime is 190068797. The next prime is 190068899. The reversal of 190068840 is 48860091.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 47361924 + 142706916 = 6882^2 + 11946^2 .

It is a super-2 number, since 2×190068840² = 72252327877891200, which contains 22 as substring.

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 = 190068795 and 190068804.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78366 + ... + 80754.

Almost surely, 2^190068840 is an apocalyptic number.

190068840 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 190068840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352333800).

190068840 is an abundant number, since it is smaller than the sum of its proper divisors (514598760).

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

190068840 is a wasteful number, since it uses less digits than its factorization.

190068840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 190068840 is about 13786.5456152004. The cubic root of 190068840 is about 574.9591300504.

The spelling of 190068840 in words is "one hundred ninety million, sixty-eight thousand, eight hundred forty".