812124224 has 28 divisors (see below), whose sum is σ = 1615098624. Its totient is φ = 405170304.

The previous prime is 812124223. The next prime is 812124259. The reversal of 812124224 is 422421218.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 812124193 and 812124202.

It is not an unprimeable number, because it can be changed into a prime (812124223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15929 + ... + 43335.

Almost surely, 2^812124224 is an apocalyptic number.

It is an amenable number.

812124224 is a deficient number, since it is larger than the sum of its proper divisors (802974400).

812124224 is a wasteful number, since it uses less digits than its factorization.

812124224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27882 (or 27872 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

The square root of 812124224 is about 28497.7933180799. The cubic root of 812124224 is about 932.9839118302.

The spelling of 812124224 in words is "eight hundred twelve million, one hundred twenty-four thousand, two hundred twenty-four".