812387028 has 96 divisors (see below), whose sum is σ = 2040438400. Its totient is φ = 250822656.

The previous prime is 812387011. The next prime is 812387083. The reversal of 812387028 is 820783218.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2410476 + ... + 2410812.

Almost surely, 2^812387028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812387028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020219200).

812387028 is an abundant number, since it is smaller than the sum of its proper divisors (1228051372).

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

812387028 is a wasteful number, since it uses less digits than its factorization.

812387028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 812387028 is about 28502.4038986188. The cubic root of 812387028 is about 933.0845390715.

The spelling of 812387028 in words is "eight hundred twelve million, three hundred eighty-seven thousand, twenty-eight".