823542044 has 24 divisors (see below), whose sum is σ = 1558268208. Its totient is φ = 378576000.

The previous prime is 823542043. The next prime is 823542053. The reversal of 823542044 is 440245328.

It is a self number, because there is not a number n which added to its sum of digits gives 823542044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823542043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18497 + ... + 44600.

It is an arithmetic number, because the mean of its divisors is an integer number (64927842).

Almost surely, 2^823542044 is an apocalyptic number.

It is an amenable number.

823542044 is a deficient number, since it is larger than the sum of its proper divisors (734726164).

823542044 is a wasteful number, since it uses less digits than its factorization.

823542044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63365 (or 63363 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 823542044 is about 28697.4222535753. The cubic root of 823542044 is about 937.3359168598.

The spelling of 823542044 in words is "eight hundred twenty-three million, five hundred forty-two thousand, forty-four".