812449580 has 24 divisors (see below), whose sum is σ = 1722712992. Its totient is φ = 321823872.

The previous prime is 812449559. The next prime is 812449613. The reversal of 812449580 is 85944218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195137 + ... + 199256.

It is an arithmetic number, because the mean of its divisors is an integer number (71779708).

Almost surely, 2^812449580 is an apocalyptic number.

It is an amenable number.

812449580 is an abundant number, since it is smaller than the sum of its proper divisors (910263412).

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

812449580 is a wasteful number, since it uses less digits than its factorization.

812449580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394505 (or 394503 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 812449580 is about 28503.5011884505. The cubic root of 812449580 is about 933.1084869371.

The spelling of 812449580 in words is "eight hundred twelve million, four hundred forty-nine thousand, five hundred eighty".