328461278 has 16 divisors (see below), whose sum is σ = 499492224. Its totient is φ = 161979480.

The previous prime is 328461277. The next prime is 328461283. The reversal of 328461278 is 872164823.

It is a super-2 number, since 2×328461278² = 215773622290786568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328461277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40001 + ... + 47507.

It is an arithmetic number, because the mean of its divisors is an integer number (31218264).

Almost surely, 2^328461278 is an apocalyptic number.

328461278 is a deficient number, since it is larger than the sum of its proper divisors (171030946).

328461278 is a wasteful number, since it uses less digits than its factorization.

328461278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7807.

The product of its digits is 129024, while the sum is 41.

The square root of 328461278 is about 18123.5007104036. The cubic root of 328461278 is about 689.9665866337.

The spelling of 328461278 in words is "three hundred twenty-eight million, four hundred sixty-one thousand, two hundred seventy-eight".