786128 has 20 divisors (see below), whose sum is σ = 1740960. Its totient is φ = 336864.

The previous prime is 786127. The next prime is 786151. The reversal of 786128 is 821687.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 786094 and 786103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3398 + ... + 3621.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

2⁷⁸⁶¹²⁸ is an apocalyptic number.

It is an amenable number.

786128 is an abundant number, since it is smaller than the sum of its proper divisors (954832).

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

786128 is a wasteful number, since it uses less digits than its factorization.

786128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7034 (or 7028 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 786128 is about 886.6385960469. The cubic root of 786128 is about 92.2920774157.

The spelling of 786128 in words is "seven hundred eighty-six thousand, one hundred twenty-eight".