804507840 has 168 divisors, whose sum is σ = 2788737120. Its totient is φ = 212865024.

The previous prime is 804507839. The next prime is 804507841. The reversal of 804507840 is 48705408.

It is an interprime number because it is at equal distance from previous prime (804507839) and next prime (804507841).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 804507795 and 804507804.

It is not an unprimeable number, because it can be changed into a prime (804507841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 393541 + ... + 395579.

Almost surely, 2^804507840 is an apocalyptic number.

804507840 is a gapful number since it is divisible by the number (80) 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 804507840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394368560).

804507840 is an abundant number, since it is smaller than the sum of its proper divisors (1984229280).

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

804507840 is a wasteful number, since it uses less digits than its factorization.

804507840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 804507840 is about 28363.8474118022. The cubic root of 804507840 is about 930.0581302548.

The spelling of 804507840 in words is "eight hundred four million, five hundred seven thousand, eight hundred forty".