823378284 has 36 divisors (see below), whose sum is σ = 2158405704. Its totient is φ = 274459104.

The previous prime is 823378273. The next prime is 823378291. The reversal of 823378284 is 482873328.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 422577 + ... + 424520.

It is an arithmetic number, because the mean of its divisors is an integer number (59955714).

Almost surely, 2^823378284 is an apocalyptic number.

It is an amenable number.

823378284 is an abundant number, since it is smaller than the sum of its proper divisors (1335027420).

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

823378284 is a wasteful number, since it uses less digits than its factorization.

823378284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847116 (or 847102 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 823378284 is about 28694.5688937820. The cubic root of 823378284 is about 937.2737834989.

The spelling of 823378284 in words is "eight hundred twenty-three million, three hundred seventy-eight thousand, two hundred eighty-four".