823011872 has 24 divisors (see below), whose sum is σ = 1620996300. Its totient is φ = 411330304.

The previous prime is 823011863. The next prime is 823011899. The reversal of 823011872 is 278110328.

It can be written as a sum of positive squares in 2 ways, for example, as 822312976 + 698896 = 28676^2 + 836^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104654 + ... + 112242.

Almost surely, 2^823011872 is an apocalyptic number.

It is an amenable number.

823011872 is a deficient number, since it is larger than the sum of its proper divisors (797984428).

823011872 is a wasteful number, since it uses less digits than its factorization.

823011872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10988 (or 10980 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 823011872 is about 28688.1834907685. The cubic root of 823011872 is about 937.1347306383.

It can be divided in two parts, 8230 and 11872, that added together give a palindrome (20102).

The spelling of 823011872 in words is "eight hundred twenty-three million, eleven thousand, eight hundred seventy-two".