190646128 has 20 divisors (see below), whose sum is σ = 373187920. Its totient is φ = 94339584.

The previous prime is 190646119. The next prime is 190646129. The reversal of 190646128 is 821646091.

It is a happy number.

190646128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×190646128² = 72691892242784768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190646129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59868 + ... + 62971.

It is an arithmetic number, because the mean of its divisors is an integer number (18659396).

Almost surely, 2^190646128 is an apocalyptic number.

It is an amenable number.

190646128 is a deficient number, since it is larger than the sum of its proper divisors (182541792).

190646128 is a wasteful number, since it uses less digits than its factorization.

190646128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122944 (or 122938 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 190646128 is about 13807.4663859812. The cubic root of 190646128 is about 575.5406413474.

Subtracting from 190646128 its sum of digits (37), we obtain a palindrome (190646091).

The spelling of 190646128 in words is "one hundred ninety million, six hundred forty-six thousand, one hundred twenty-eight".