328252644 has 18 divisors (see below), whose sum is σ = 829749830. Its totient is φ = 109417536.

The previous prime is 328252637. The next prime is 328252681. The reversal of 328252644 is 446252823.

328252644 is a `hidden beast` number, since 3 + 2 + 8 + 2 + 5 + 2 + 644 = 666.

It can be written as a sum of positive squares in only one way, i.e., 204776100 + 123476544 = 14310^2 + 11112^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 9118129 = 328252644 / (3 + 2 + 8 + 2 + 5 + 2 + 6 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 328252599 and 328252608.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4559029 + ... + 4559100.

Almost surely, 2^328252644 is an apocalyptic number.

It is an amenable number.

328252644 is an abundant number, since it is smaller than the sum of its proper divisors (501497186).

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

328252644 is a wasteful number, since it uses less digits than its factorization.

328252644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118139 (or 9118134 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 328252644 is about 18117.7438992828. The cubic root of 328252644 is about 689.8204699906.

The spelling of 328252644 in words is "three hundred twenty-eight million, two hundred fifty-two thousand, six hundred forty-four".