812214384 has 40 divisors (see below), whose sum is σ = 2165908992. Its totient is φ = 262004160.

The previous prime is 812214383. The next prime is 812214409. The reversal of 812214384 is 483412218.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812214383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271434 + ... + 274409.

Almost surely, 2^812214384 is an apocalyptic number.

It is an amenable number.

812214384 is an abundant number, since it is smaller than the sum of its proper divisors (1353694608).

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

812214384 is a wasteful number, since it uses less digits than its factorization.

812214384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545885 (or 545879 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 812214384 is about 28499.3751510450. The cubic root of 812214384 is about 933.0184363994.

The spelling of 812214384 in words is "eight hundred twelve million, two hundred fourteen thousand, three hundred eighty-four".