789745820 has 24 divisors (see below), whose sum is σ = 1659931728. Its totient is φ = 315619200.

The previous prime is 789745819. The next prime is 789745823. The reversal of 789745820 is 28547987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789745823) 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 7 ways as a sum of consecutive naturals, for example, 6560 + ... + 40280.

It is an arithmetic number, because the mean of its divisors is an integer number (69163822).

Almost surely, 2^789745820 is an apocalyptic number.

It is an amenable number.

789745820 is an abundant number, since it is smaller than the sum of its proper divisors (870185908).

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

789745820 is a wasteful number, since it uses less digits than its factorization.

789745820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34901 (or 34899 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 789745820 is about 28102.4166220630. The cubic root of 789745820 is about 924.3343913799.

The spelling of 789745820 in words is "seven hundred eighty-nine million, seven hundred forty-five thousand, eight hundred twenty".