190247321 has 8 divisors (see below), whose sum is σ = 208475904. Its totient is φ = 172174320.

The previous prime is 190247311. The next prime is 190247327. The reversal of 190247321 is 123742091.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190247321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190247327) 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, 36326 + ... + 41231.

It is an arithmetic number, because the mean of its divisors is an integer number (26059488).

Almost surely, 2^190247321 is an apocalyptic number.

190247321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

190247321 is a deficient number, since it is larger than the sum of its proper divisors (18228583).

190247321 is a wasteful number, since it uses less digits than its factorization.

190247321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77791.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 190247321 is about 13793.0171101177. The cubic root of 190247321 is about 575.1390423675.

The spelling of 190247321 in words is "one hundred ninety million, two hundred forty-seven thousand, three hundred twenty-one".