324991206400 has 297 divisors, whose sum is σ = 938953366959. Its totient is φ = 111206645760.

The previous prime is 324991206383. The next prime is 324991206427. The reversal of 324991206400 is 4602199423.

The square root of 324991206400 is 570080.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 12393923584 + 312597282816 = 111328^2 + 559104^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 638489346 + ... + 638489854.

Almost surely, 2^324991206400 is an apocalyptic number.

324991206400 is the 570080-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 324991206400

324991206400 is an abundant number, since it is smaller than the sum of its proper divisors (613962160559).

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

324991206400 is an frugal number, since it uses more digits than its factorization.

324991206400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 324991206400 in words is "three hundred twenty-four billion, nine hundred ninety-one million, two hundred six thousand, four hundred".