812275384 has 32 divisors (see below), whose sum is σ = 1658466000. Its totient is φ = 371492352.

The previous prime is 812275379. The next prime is 812275397. The reversal of 812275384 is 483572218.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87729 + ... + 96544.

Almost surely, 2^812275384 is an apocalyptic number.

It is an amenable number.

812275384 is an abundant number, since it is smaller than the sum of its proper divisors (846190616).

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

812275384 is a wasteful number, since it uses less digits than its factorization.

812275384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184327 (or 184323 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 812275384 is about 28500.4453298541. The cubic root of 812275384 is about 933.0417934100.

The spelling of 812275384 in words is "eight hundred twelve million, two hundred seventy-five thousand, three hundred eighty-four".