823234540 has 24 divisors (see below), whose sum is σ = 1732362912. Its totient is φ = 328613760.

The previous prime is 823234519. The next prime is 823234547. The reversal of 823234540 is 45432328.

823234540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (823234547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32521 + ... + 52000.

It is an arithmetic number, because the mean of its divisors is an integer number (72181788).

Almost surely, 2^823234540 is an apocalyptic number.

It is an amenable number.

823234540 is an abundant number, since it is smaller than the sum of its proper divisors (909128372).

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

823234540 is a wasteful number, since it uses less digits than its factorization.

823234540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85017 (or 85015 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 823234540 is about 28692.0640595967. The cubic root of 823234540 is about 937.2192377628.

Adding to 823234540 its reverse (45432328), we get a palindrome (868666868).

The spelling of 823234540 in words is "eight hundred twenty-three million, two hundred thirty-four thousand, five hundred forty".