328723560 has 384 divisors, whose sum is σ = 1304035200. Its totient is φ = 70778880.

The previous prime is 328723559. The next prime is 328723601. The reversal of 328723560 is 65327823.

328723560 is a `hidden beast` number, since 3 + 28 + 72 + 3 + 560 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1278952 + ... + 1279208.

It is an arithmetic number, because the mean of its divisors is an integer number (3395925).

Almost surely, 2^328723560 is an apocalyptic number.

328723560 is a gapful number since it is divisible by the number (30) 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 328723560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652017600).

328723560 is an abundant number, since it is smaller than the sum of its proper divisors (975311640).

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

328723560 is a wasteful number, since it uses less digits than its factorization.

328723560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 328723560 is about 18130.7352305415. The cubic root of 328723560 is about 690.1501878491.

The spelling of 328723560 in words is "three hundred twenty-eight million, seven hundred twenty-three thousand, five hundred sixty".