190986240 has 96 divisors (see below), whose sum is σ = 611105040. Its totient is φ = 50921472.

The previous prime is 190986221. The next prime is 190986251. The reversal of 190986240 is 42689091.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27612 + ... + 33828.

Almost surely, 2^190986240 is an apocalyptic number.

190986240 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 190986240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305552520).

190986240 is an abundant number, since it is smaller than the sum of its proper divisors (420118800).

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

190986240 is an equidigital number, since it uses as much as digits as its factorization.

190986240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247 (or 6227 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 190986240 is about 13819.7771327905. Note that the first 3 decimals coincide. The cubic root of 190986240 is about 575.8826921602.

The spelling of 190986240 in words is "one hundred ninety million, nine hundred eighty-six thousand, two hundred forty".