823506012 has 72 divisors (see below), whose sum is σ = 2402190336. Its totient is φ = 232995744.

The previous prime is 823506001. The next prime is 823506023. The reversal of 823506012 is 210605328.

823506012 is a `hidden beast` number, since 8 + 2 + 3 + 50 + 601 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (823506001) and next prime (823506023).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10093 + ... + 41819.

Almost surely, 2^823506012 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 823506012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201095168).

823506012 is an abundant number, since it is smaller than the sum of its proper divisors (1578684324).

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

823506012 is a wasteful number, since it uses less digits than its factorization.

823506012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31847 (or 31842 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 823506012 is about 28696.7944551303. The cubic root of 823506012 is about 937.3222464060.

The spelling of 823506012 in words is "eight hundred twenty-three million, five hundred six thousand, twelve".