823478112 has 72 divisors (see below), whose sum is σ = 2398916520. Its totient is φ = 267793920.

The previous prime is 823478077. The next prime is 823478129. The reversal of 823478112 is 211874328.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23062 + ... + 46677.

It is an arithmetic number, because the mean of its divisors is an integer number (33318285).

Almost surely, 2^823478112 is an apocalyptic number.

823478112 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

823478112 is an abundant number, since it is smaller than the sum of its proper divisors (1575438408).

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

823478112 is a wasteful number, since it uses less digits than its factorization.

823478112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69796 (or 69785 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 823478112 is about 28696.3083340000. The cubic root of 823478112 is about 937.3116609395.

The spelling of 823478112 in words is "eight hundred twenty-three million, four hundred seventy-eight thousand, one hundred twelve".