867247812 has 72 divisors (see below), whose sum is σ = 2231355672. Its totient is φ = 283968000.

The previous prime is 867247763. The next prime is 867247817. The reversal of 867247812 is 218742768.

It can be written as a sum of positive squares in 4 ways, for example, as 104162436 + 763085376 = 10206^2 + 27624^2 .

It is not an unprimeable number, because it can be changed into a prime (867247817) 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, 497262 + ... + 499002.

It is an arithmetic number, because the mean of its divisors is an integer number (30991051).

Almost surely, 2^867247812 is an apocalyptic number.

It is an amenable number.

867247812 is an abundant number, since it is smaller than the sum of its proper divisors (1364107860).

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

867247812 is a wasteful number, since it uses less digits than its factorization.

867247812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989 (or 1984 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 867247812 is about 29449.0714963987. The cubic root of 867247812 is about 953.6325602617.

The spelling of 867247812 in words is "eight hundred sixty-seven million, two hundred forty-seven thousand, eight hundred twelve".