320790528 has 168 divisors, whose sum is σ = 979703400. Its totient is φ = 100859904.

The previous prime is 320790523. The next prime is 320790529. The reversal of 320790528 is 825097023.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 320790492 and 320790501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320790523) 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, 1400718 + ... + 1400946.

Almost surely, 2^320790528 is an apocalyptic number.

320790528 is a gapful number since it is divisible by the number (38) 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 320790528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489851700).

320790528 is an abundant number, since it is smaller than the sum of its proper divisors (658912872).

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

320790528 is a wasteful number, since it uses less digits than its factorization.

320790528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 320790528 is about 17910.6261197089. The cubic root of 320790528 is about 684.5531587713.

The spelling of 320790528 in words is "three hundred twenty million, seven hundred ninety thousand, five hundred twenty-eight".