191126028 has 12 divisors (see below), whose sum is σ = 445960760. Its totient is φ = 63708672.

The previous prime is 191125999. The next prime is 191126029. The reversal of 191126028 is 820621191.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 191125986 and 191126004.

It is not an unprimeable number, because it can be changed into a prime (191126029) 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, 7963573 + ... + 7963596.

Almost surely, 2^191126028 is an apocalyptic number.

It is an amenable number.

191126028 is an abundant number, since it is smaller than the sum of its proper divisors (254834732).

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

191126028 is a wasteful number, since it uses less digits than its factorization.

191126028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15927176 (or 15927174 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 191126028 is about 13824.8337422191. The cubic root of 191126028 is about 576.0231592733.

The spelling of 191126028 in words is "one hundred ninety-one million, one hundred twenty-six thousand, twenty-eight".