807940 has 48 divisors (see below), whose sum is σ = 2016000. Its totient is φ = 266112.

The previous prime is 807931. The next prime is 807941. The reversal of 807940 is 49708.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 807899 and 807908.

It is not an unprimeable number, because it can be changed into a prime (807941) by changing a digit.

807940 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 15 ways as a sum of consecutive naturals, for example, 3961 + ... + 4159.

It is an arithmetic number, because the mean of its divisors is an integer number (42000).

2⁸⁰⁷⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 807940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008000).

807940 is an abundant number, since it is smaller than the sum of its proper divisors (1208060).

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

807940 is a wasteful number, since it uses less digits than its factorization.

807940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 242 counting only the distinct ones).

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

The square root of 807940 is about 898.8548269882. The cubic root of 807940 is about 93.1378846488.

The spelling of 807940 in words is "eight hundred seven thousand, nine hundred forty".