193428886 has 16 divisors (see below), whose sum is σ = 333792000. Its totient is φ = 82348200.

The previous prime is 193428863. The next prime is 193428973. The reversal of 193428886 is 688824391.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43636 + ... + 47863.

It is an arithmetic number, because the mean of its divisors is an integer number (20862000).

Almost surely, 2^193428886 is an apocalyptic number.

193428886 is a deficient number, since it is larger than the sum of its proper divisors (140363114).

193428886 is a wasteful number, since it uses less digits than its factorization.

193428886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91659.

The product of its digits is 663552, while the sum is 49.

The square root of 193428886 is about 13907.8713684014. The cubic root of 193428886 is about 578.3274107549.

The spelling of 193428886 in words is "one hundred ninety-three million, four hundred twenty-eight thousand, eight hundred eighty-six".