812838546 has 48 divisors (see below), whose sum is σ = 1940754816. Its totient is φ = 244284768.

The previous prime is 812838541. The next prime is 812838547. The reversal of 812838546 is 645838218.

812838546 is a `hidden beast` number, since 81 + 28 + 3 + 8 + 546 = 666.

812838546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (812838541) 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, 30330 + ... + 50453.

It is an arithmetic number, because the mean of its divisors is an integer number (40432392).

Almost surely, 2^812838546 is an apocalyptic number.

812838546 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

812838546 is an abundant number, since it is smaller than the sum of its proper divisors (1127916270).

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

812838546 is a wasteful number, since it uses less digits than its factorization.

812838546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80847 (or 80844 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 812838546 is about 28510.3234986908. The cubic root of 812838546 is about 933.2573739486.

The spelling of 812838546 in words is "eight hundred twelve million, eight hundred thirty-eight thousand, five hundred forty-six".