328205040 has 40 divisors (see below), whose sum is σ = 1017436368. Its totient is φ = 87521280.

The previous prime is 328205021. The next prime is 328205051. The reversal of 328205040 is 40502823.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 328205040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683521 + ... + 684000.

Almost surely, 2^328205040 is an apocalyptic number.

328205040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328205040 is an abundant number, since it is smaller than the sum of its proper divisors (689231328).

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

328205040 is a wasteful number, since it uses less digits than its factorization.

328205040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367537 (or 1367531 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 328205040 is about 18116.4301119177. The cubic root of 328205040 is about 689.7871218955.

Adding to 328205040 its reverse (40502823), we get a palindrome (368707863).

The spelling of 328205040 in words is "three hundred twenty-eight million, two hundred five thousand, forty".