789040 has 40 divisors (see below), whose sum is σ = 2098080. Its totient is φ = 270336.

The previous prime is 789031. The next prime is 789067. The reversal of 789040 is 40987.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is an unprimeable number.

789040 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145 + ... + 1264.

It is an arithmetic number, because the mean of its divisors is an integer number (52452).

2⁷⁸⁹⁰⁴⁰ is an apocalyptic number.

789040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 789040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1049040).

789040 is an abundant number, since it is smaller than the sum of its proper divisors (1309040).

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

789040 is a wasteful number, since it uses less digits than its factorization.

789040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429 (or 1423 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 789040 is about 888.2792353759. The cubic root of 789040 is about 92.4058940663.

The spelling of 789040 in words is "seven hundred eighty-nine thousand, forty".