324023640 has 128 divisors (see below), whose sum is σ = 1007631360. Its totient is φ = 83303424.

The previous prime is 324023633. The next prime is 324023677. The reversal of 324023640 is 46320423.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 324023640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411327 + ... + 412113.

It is an arithmetic number, because the mean of its divisors is an integer number (7872120).

Almost surely, 2^324023640 is an apocalyptic number.

324023640 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 324023640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503815680).

324023640 is an abundant number, since it is smaller than the sum of its proper divisors (683607720).

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

324023640 is a wasteful number, since it uses less digits than its factorization.

324023640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 324023640 is about 18000.6566546890. The cubic root of 324023640 is about 686.8452494743.

The spelling of 324023640 in words is "three hundred twenty-four million, twenty-three thousand, six hundred forty".