812628500 has 24 divisors (see below), whose sum is σ = 1774781736. Its totient is φ = 325051200.

The previous prime is 812628497. The next prime is 812628503. The reversal of 812628500 is 5826218.

812628500 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 (812628497) and next prime (812628503).

It can be written as a sum of positive squares in 4 ways, for example, as 41011216 + 771617284 = 6404^2 + 27778^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812628503) 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, 812129 + ... + 813128.

It is an arithmetic number, because the mean of its divisors is an integer number (73949239).

Almost surely, 2^812628500 is an apocalyptic number.

It is an amenable number.

812628500 is an abundant number, since it is smaller than the sum of its proper divisors (962153236).

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

812628500 is a wasteful number, since it uses less digits than its factorization.

812628500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625276 (or 1625264 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 812628500 is about 28506.6395774739. The cubic root of 812628500 is about 933.1769791941.

The spelling of 812628500 in words is "eight hundred twelve million, six hundred twenty-eight thousand, five hundred".