813452072 has 8 divisors (see below), whose sum is σ = 1525222650. Its totient is φ = 406726032.

The previous prime is 813452071. The next prime is 813452089. The reversal of 813452072 is 270254318.

It can be written as a sum of positive squares in only one way, i.e., 796029796 + 17422276 = 28214^2 + 4174^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (813452071) 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 as a sum of consecutive naturals, namely, 50840747 + ... + 50840762.

Almost surely, 2^813452072 is an apocalyptic number.

It is an amenable number.

813452072 is a deficient number, since it is larger than the sum of its proper divisors (711770578).

813452072 is a wasteful number, since it uses less digits than its factorization.

813452072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101681515 (or 101681511 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 813452072 is about 28521.0811856774. The cubic root of 813452072 is about 933.4921207165.

It can be divided in two parts, 8134 and 52072, that added together give a palindrome (60206).

The spelling of 813452072 in words is "eight hundred thirteen million, four hundred fifty-two thousand, seventy-two".