328278258 has 80 divisors (see below), whose sum is σ = 917129664. Its totient is φ = 85263840.

The previous prime is 328278253. The next prime is 328278263. The reversal of 328278258 is 852872823.

328278258 is a `hidden beast` number, since 328 + 2 + 78 + 258 = 666.

It is an interprime number because it is at equal distance from previous prime (328278253) and next prime (328278263).

It is a super-2 number, since 2×328278258² = 215533229351029128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (328278253) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 685 + ... + 25632.

Almost surely, 2^328278258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328278258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458564832).

328278258 is an abundant number, since it is smaller than the sum of its proper divisors (588851406).

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

328278258 is a wasteful number, since it uses less digits than its factorization.

328278258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26349 (or 26340 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 328278258 is about 18118.4507615856. The cubic root of 328278258 is about 689.8384120669.

The spelling of 328278258 in words is "three hundred twenty-eight million, two hundred seventy-eight thousand, two hundred fifty-eight".