190244840 has 16 divisors (see below), whose sum is σ = 428050980. Its totient is φ = 76097920.

The previous prime is 190244837. The next prime is 190244849. The reversal of 190244840 is 48442091.

It can be written as a sum of positive squares in 2 ways, for example, as 174292804 + 15952036 = 13202^2 + 3994^2 .

It is a junction number, because it is equal to n+sod(n) for n = 190244797 and 190244806.

It is not an unprimeable number, because it can be changed into a prime (190244849) 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 3 ways as a sum of consecutive naturals, for example, 2378021 + ... + 2378100.

Almost surely, 2^190244840 is an apocalyptic number.

190244840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190244840 is an abundant number, since it is smaller than the sum of its proper divisors (237806140).

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

190244840 is a wasteful number, since it uses less digits than its factorization.

190244840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4756132 (or 4756128 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 190244840 is about 13792.9271730115. The cubic root of 190244840 is about 575.1365422426.

The spelling of 190244840 in words is "one hundred ninety million, two hundred forty-four thousand, eight hundred forty".