1324621280 has 24 divisors (see below), whose sum is σ = 3129418152. Its totient is φ = 529848448.

The previous prime is 1324621261. The next prime is 1324621307. The reversal of 1324621280 is 821264231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4139282 + ... + 4139601.

It is an arithmetic number, because the mean of its divisors is an integer number (130392423).

Almost surely, 2^1324621280 is an apocalyptic number.

1324621280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1324621280 is an abundant number, since it is smaller than the sum of its proper divisors (1804796872).

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

1324621280 is an equidigital number, since it uses as much as digits as its factorization.

1324621280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8278898 (or 8278890 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1324621280 is about 36395.3469553458. The cubic root of 1324621280 is about 1098.2399622406.

The spelling of 1324621280 in words is "one billion, three hundred twenty-four million, six hundred twenty-one thousand, two hundred eighty".