812327388 has 48 divisors (see below), whose sum is σ = 2009032704. Its totient is φ = 254580480.

The previous prime is 812327377. The next prime is 812327407. The reversal of 812327388 is 883723218.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298731 + ... + 301437.

It is an arithmetic number, because the mean of its divisors is an integer number (41854848).

Almost surely, 2^812327388 is an apocalyptic number.

It is an amenable number.

812327388 is an abundant number, since it is smaller than the sum of its proper divisors (1196705316).

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

812327388 is a wasteful number, since it uses less digits than its factorization.

812327388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202 (or 4200 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 812327388 is about 28501.3576518734. The cubic root of 812327388 is about 933.0617049124.

It can be divided in two parts, 8123 and 27388, that added together give a triangular number (35511 = T₂₆₆).

The spelling of 812327388 in words is "eight hundred twelve million, three hundred twenty-seven thousand, three hundred eighty-eight".