190228081 has 8 divisors (see below), whose sum is σ = 196948800. Its totient is φ = 183518160.

The previous prime is 190228067. The next prime is 190228091. The reversal of 190228081 is 180822091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 190228081 - 2⁷ = 190227953 is a prime.

It is a super-2 number, since 2×190228081² = 72373445601885122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190228091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52746 + ... + 56236.

It is an arithmetic number, because the mean of its divisors is an integer number (24618600).

Almost surely, 2^190228081 is an apocalyptic number.

It is an amenable number.

190228081 is a deficient number, since it is larger than the sum of its proper divisors (6720719).

190228081 is a wasteful number, since it uses less digits than its factorization.

190228081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 190228081 is about 13792.3196381174. The cubic root of 190228081 is about 575.1196534861.

The spelling of 190228081 in words is "one hundred ninety million, two hundred twenty-eight thousand, eighty-one".