812662072 has 32 divisors (see below), whose sum is σ = 1605675600. Its totient is φ = 384528384.

The previous prime is 812662057. The next prime is 812662079. The reversal of 812662072 is 270266218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812662079) 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 7 ways as a sum of consecutive naturals, for example, 172938 + ... + 177574.

Almost surely, 2^812662072 is an apocalyptic number.

It is an amenable number.

812662072 is a deficient number, since it is larger than the sum of its proper divisors (793013528).

812662072 is a wasteful number, since it uses less digits than its factorization.

812662072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815 (or 5811 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 812662072 is about 28507.2284166665. The cubic root of 812662072 is about 933.1898297510.

It can be divided in two parts, 81266 and 2072, that added together give a palindrome (83338).

The spelling of 812662072 in words is "eight hundred twelve million, six hundred sixty-two thousand, seventy-two".