324632640 has 56 divisors (see below), whose sum is σ = 1030711680. Its totient is φ = 86568448.

The previous prime is 324632639. The next prime is 324632647. The reversal of 324632640 is 46236423.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 324632598 and 324632607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324632647) 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, 168120 + ... + 170039.

Almost surely, 2^324632640 is an apocalyptic number.

324632640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

324632640 is an abundant number, since it is smaller than the sum of its proper divisors (706079040).

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

324632640 is a wasteful number, since it uses less digits than its factorization.

324632640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338179 (or 338169 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 324632640 is about 18017.5647633081. The cubic root of 324632640 is about 687.2752870001.

The spelling of 324632640 in words is "three hundred twenty-four million, six hundred thirty-two thousand, six hundred forty".