328707072 has 132 divisors (see below), whose sum is σ = 985032776. Its totient is φ = 109486080.

The previous prime is 328707059. The next prime is 328707073. The reversal of 328707072 is 270707823.

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

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (328707073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248172 + ... + 249492.

Almost surely, 2^328707072 is an apocalyptic number.

328707072 is a gapful number since it is divisible by the number (32) 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 328707072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492516388).

328707072 is an abundant number, since it is smaller than the sum of its proper divisors (656325704).

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

328707072 is an equidigital number, since it uses as much as digits as its factorization.

328707072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 1326 counting only the distinct ones).

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

The square root of 328707072 is about 18130.2805273388. The cubic root of 328707072 is about 690.1386488866.

The spelling of 328707072 in words is "three hundred twenty-eight million, seven hundred seven thousand, seventy-two".