190221092 has 24 divisors (see below), whose sum is σ = 364626360. Its totient is φ = 86428160.

The previous prime is 190221091. The next prime is 190221113. The reversal of 190221092 is 290122091.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 113763556 + 76457536 = 10666^2 + 8744^2 .

It is not an unprimeable number, because it can be changed into a prime (190221091) by changing a digit.

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, 46259 + ... + 50202.

It is an arithmetic number, because the mean of its divisors is an integer number (15192765).

Almost surely, 2^190221092 is an apocalyptic number.

It is an amenable number.

190221092 is a deficient number, since it is larger than the sum of its proper divisors (174405268).

190221092 is a wasteful number, since it uses less digits than its factorization.

190221092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96511 (or 96509 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 190221092 is about 13792.0662701424. The cubic root of 190221092 is about 575.1126100807.

Subtracting 190221092 from its reverse (290122091), we obtain a palindrome (99900999).

The spelling of 190221092 in words is "one hundred ninety million, two hundred twenty-one thousand, ninety-two".