328226388 has 48 divisors (see below), whose sum is σ = 903512064. Its totient is φ = 90753120.

The previous prime is 328226377. The next prime is 328226389. The reversal of 328226388 is 883622823.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328226389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60420 + ... + 65627.

It is an arithmetic number, because the mean of its divisors is an integer number (18823168).

Almost surely, 2^328226388 is an apocalyptic number.

It is an amenable number.

328226388 is an abundant number, since it is smaller than the sum of its proper divisors (575285676).

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

328226388 is a wasteful number, since it uses less digits than its factorization.

328226388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126092 (or 126090 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 328226388 is about 18117.0192912631. The cubic root of 328226388 is about 689.8020772378.

The spelling of 328226388 in words is "three hundred twenty-eight million, two hundred twenty-six thousand, three hundred eighty-eight".