1327721472 has 264 divisors, whose sum is σ = 4782316032. Its totient is φ = 344678400.

The previous prime is 1327721453. The next prime is 1327721489. The reversal of 1327721472 is 2741277231.

It is a tau number, because it is divible by the number of its divisors (264).

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 708697 + ... + 710567.

Almost surely, 2^1327721472 is an apocalyptic number.

1327721472 is a gapful number since it is divisible by the number (12) 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 1327721472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2391158016).

1327721472 is an abundant number, since it is smaller than the sum of its proper divisors (3454594560).

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

1327721472 is a wasteful number, since it uses less digits than its factorization.

1327721472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1894 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 1327721472 is about 36437.9125637021. The cubic root of 1327721472 is about 1099.0960816565.

The spelling of 1327721472 in words is "one billion, three hundred twenty-seven million, seven hundred twenty-one thousand, four hundred seventy-two".