323775540 has 144 divisors (see below), whose sum is σ = 1134544320. Its totient is φ = 73866240.

The previous prime is 323775533. The next prime is 323775581. The reversal of 323775540 is 45577323.

323775540 is a `hidden beast` number, since 32 + 3 + 77 + 554 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 323775495 and 323775504.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 28851 + ... + 38469.

It is an arithmetic number, because the mean of its divisors is an integer number (7878780).

Almost surely, 2^323775540 is an apocalyptic number.

323775540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 323775540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (567272160).

323775540 is an abundant number, since it is smaller than the sum of its proper divisors (810768780).

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

323775540 is a wasteful number, since it uses less digits than its factorization.

323775540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9662 (or 9657 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 36.

The square root of 323775540 is about 17993.7639197584. The cubic root of 323775540 is about 686.6699023737.

The spelling of 323775540 in words is "three hundred twenty-three million, seven hundred seventy-five thousand, five hundred forty".