812671452 has 36 divisors (see below), whose sum is σ = 2074601256. Its totient is φ = 268207200.

The previous prime is 812671429. The next prime is 812671459. The reversal of 812671452 is 254176218.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812671459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108118 + ... + 115389.

Almost surely, 2^812671452 is an apocalyptic number.

It is an amenable number.

812671452 is an abundant number, since it is smaller than the sum of its proper divisors (1261929804).

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

812671452 is a wasteful number, since it uses less digits than its factorization.

812671452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223618 (or 223613 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 812671452 is about 28507.3929358684. The cubic root of 812671452 is about 933.1934201269.

The spelling of 812671452 in words is "eight hundred twelve million, six hundred seventy-one thousand, four hundred fifty-two".