328553550 has 192 divisors, whose sum is σ = 990144960. Its totient is φ = 79626240.

The previous prime is 328553513. The next prime is 328553573. The reversal of 328553550 is 55355823.

It is a congruent number.

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, 1702254 + ... + 1702446.

It is an arithmetic number, because the mean of its divisors is an integer number (5157005).

Almost surely, 2^328553550 is an apocalyptic number.

328553550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 328553550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495072480).

328553550 is an abundant number, since it is smaller than the sum of its proper divisors (661591410).

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

328553550 is a wasteful number, since it uses less digits than its factorization.

328553550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 328553550 is about 18126.0461767038. The cubic root of 328553550 is about 690.0311895164.

It can be divided in two parts, 328 and 553550, that added together give a triangular number (553878 = T₁₀₅₂).

The spelling of 328553550 in words is "three hundred twenty-eight million, five hundred fifty-three thousand, five hundred fifty".