804868740 has 144 divisors (see below), whose sum is σ = 2784036528. Its totient is φ = 186458112.

The previous prime is 804868681. The next prime is 804868751. The reversal of 804868740 is 47868408.

It can be written as a sum of positive squares in 8 ways, for example, as 9290304 + 795578436 = 3048^2 + 28206^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29664 + ... + 49896.

It is an arithmetic number, because the mean of its divisors is an integer number (19333587).

Almost surely, 2^804868740 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 804868740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392018264).

804868740 is an abundant number, since it is smaller than the sum of its proper divisors (1979167788).

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

804868740 is a wasteful number, since it uses less digits than its factorization.

804868740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20278 (or 20273 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 804868740 is about 28370.2086703641. The cubic root of 804868740 is about 930.1971833020.

The spelling of 804868740 in words is "eight hundred four million, eight hundred sixty-eight thousand, seven hundred forty".