190865312 has 48 divisors (see below), whose sum is σ = 416096352. Its totient is φ = 85451520.

The previous prime is 190865303. The next prime is 190865321. The reversal of 190865312 is 213568091.

It is an interprime number because it is at equal distance from previous prime (190865303) and next prime (190865321).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19538 + ... + 27630.

It is an arithmetic number, because the mean of its divisors is an integer number (8668674).

Almost surely, 2^190865312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190865312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208048176).

190865312 is an abundant number, since it is smaller than the sum of its proper divisors (225231040).

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

190865312 is a wasteful number, since it uses less digits than its factorization.

190865312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8181 (or 8173 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 190865312 is about 13815.4012609117. The cubic root of 190865312 is about 575.7611213678.

The spelling of 190865312 in words is "one hundred ninety million, eight hundred sixty-five thousand, three hundred twelve".