816508460 has 24 divisors (see below), whose sum is σ = 1747022256. Its totient is φ = 320440640.

The previous prime is 816508457. The next prime is 816508463. The reversal of 816508460 is 64805618.

816508460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (816508457) and next prime (816508463).

It is not an unprimeable number, because it can be changed into a prime (816508463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384086 + ... + 386205.

It is an arithmetic number, because the mean of its divisors is an integer number (72792594).

Almost surely, 2^816508460 is an apocalyptic number.

It is an amenable number.

816508460 is an abundant number, since it is smaller than the sum of its proper divisors (930513796).

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

816508460 is a wasteful number, since it uses less digits than its factorization.

816508460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770353 (or 770351 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 816508460 is about 28574.6121583478. The cubic root of 816508460 is about 934.6597978765.

The spelling of 816508460 in words is "eight hundred sixteen million, five hundred eight thousand, four hundred sixty".